Excelerate or accelerate is a spelling question that often catches people because the incorrect form looks like it should be a real English word. The extra e makes sense at first glance. It seems to connect the word with excel and excellent. That visual connection is exactly what causes the problem.
The correct standard English word is accelerate.
Excelerate is not the standard spelling of the verb. If you want to say that something becomes faster or causes something to happen faster then accelerate is the word you need. Cambridge defines accelerate as moving more quickly or making something happen faster or sooner. It also uses the word for increasing speed in physical and broader processes.
The confusion is understandable. Accelerate contains the sound ex in many American pronunciations. It also shares part of its spelling with excel. That makes excelerate look familiar even though the extra e does not belong there.
This guide explains the correct spelling. You will learn what accelerate means, you will see how it works in grammar, you will learn how to pronounce it. We will also look at its word origin. American and British usage. Common mistakes. Related words. Natural examples. Memory tricks. And the difference between accelerate and similar verbs such as speed up. Hasten. Advance. And expedite.
Quick Answer
Accelerate is the correct spelling. Excelerate is a common misspelling and should not be used as the standard English verb. Accelerate means to become faster or to make something happen faster or sooner. Use it for physical speed and for processes such as growth change inflation or progress.
Excelerate Or Accelerate At A Glance
| Feature | Accelerate | Excelerate |
|---|---|---|
| Standard English spelling | Yes | No |
| Main meaning | Become faster or make something faster | No standard general English meaning |
| Part of speech | Verb | Common misspelling |
| American pronunciation | /ekˈsel.ɚ.eɪt/ | Not a standard pronunciation target |
| British pronunciation | /əkˈsel.ə.reɪt/ | Not a standard pronunciation target |
| Physical speed | Yes | No |
| Rate of change | Yes | No |
| Process improvement | Yes | No |
| Formal writing | Correct | Incorrect |
| Academic writing | Correct | Incorrect |
| Workplace writing | Correct | Incorrect |
| Common phrase | accelerate growth | not standard |
| Related noun | acceleration | not standard |
| Related adjective | accelerative | not standard |
| Correct past tense | accelerated | not standard |
| Correct present participle | accelerating | not standard |
The answer is simple. If you are writing a normal English sentence then choose accelerate.
For example:
The car began to accelerate.
Not:
The car began to excelerate.
And:
New technology can accelerate scientific progress.
Not:
New technology can excelerate scientific progress.
Cambridge records accelerate as a standard verb with meanings connected to increased speed and faster progress.
What Does Accelerate Mean
Accelerate is a verb that means to become faster or to make something faster.
The word has two major uses.
The first involves physical movement.
The car accelerated after the light turned green.
The car increased its speed.
The second involves a process or event.
The project accelerated after the team received more funding.
The project began moving forward at a faster rate.
Cambridge gives both senses. It defines accelerate as increasing speed and also as making something happen faster or sooner.
This broader meaning is important because accelerate is not limited to cars. People use it with economic change. Scientific development. Business activity. Learning. Growth. Production. Technology. Social change. And many other processes.
Examples include:
The company accelerated its expansion plans.
The treatment accelerated the healing process.
Inflation accelerated during the second quarter.
The team accelerated development of the new product.
The discovery accelerated research in the field.
In each sentence the basic idea is the same.
Something is happening faster than before.
What Does Excelerate Mean
Excelerate is generally a misspelling of accelerate.
It may appear in informal writing. Online posts. User generated content. Names. Branding. Or other contexts where someone has deliberately created a new form. But that does not make it the standard English spelling of the verb.
If your sentence means become faster or make something faster then write accelerate.
For example:
The economy is expected to accelerate.
That is standard English.
The following form is not standard:
The economy is expected to excelerate.
The extra e does not create a recognized standard verb.
This distinction matters in school assignments. Reports. Resumes. Business emails. Articles. Academic papers. Applications. And professional editing.
If you are checking a sentence and see excelerate then the intended word is almost certainly accelerate when the context concerns speed or faster progress.
Which One Is Correct
Accelerate is correct. Excelerate is incorrect as the standard English spelling.
The correct forms include:
- Accelerate.
- Accelerates.
- Accelerated.
- Accelerating.
- Acceleration.
- Accelerative.
The incorrect spelling excelerate should not be used in standard general writing.
Consider these examples.
The car will accelerate quickly.
The company wants to accelerate growth.
The medicine may accelerate recovery.
Technology can accelerate change.
All four use the correct word.
The most common error is inserting an extra e after the initial c sound.
The correct spelling is:
accelerate
not:
excelerate
A useful way to see the structure is:
accelerate
acceleration
accelerated
accelerating
The word keeps the accel sequence throughout its main forms.
Why People Confuse Excelerate or Accelerate
There are several reasons this misspelling feels natural.
Visual Similarity
The strongest influence is probably the familiar word excel.
English speakers know words such as:
- Excel.
- Excellent.
- Excellence.
These words are associated with success and high performance.
When someone sees accelerate they may mentally connect the spelling with excel because the middle of the word looks similar.
That can lead to:
accel + erate
becoming:
excel + erate
The result looks plausible even though it is wrong.
Pronunciation
American English pronunciation adds another layer of confusion.
Cambridge gives the US pronunciation of accelerate as /ekˈsel.ɚ.eɪt/. The British pronunciation is /əkˈsel.ə.reɪt/.
The sound in the middle resembles the beginning of excel.
That means a listener may understand the word perfectly but still have trouble reconstructing the spelling later.
This is common in English. Pronunciation does not always provide a clear map of spelling.
Keyboard Errors
Typing quickly can create accidental substitutions.
A person who knows the correct word may type excelerate because the brain is working from sound rather than spelling.
This becomes more likely when the writer already knows the word excel.
Autocorrect can sometimes make matters worse. Spell checking tools do not replace human judgment. A tool can flag an unfamiliar word. It can also miss context or suggest an unsuitable correction.
The Connection With Excel
The words accelerate and excel are not related in meaning.
Excel means to perform extremely well.
Accelerate means to become faster or make something happen faster.
Compare:
She excels at mathematics.
She accelerated the research process.
The first sentence concerns ability.
The second concerns speed.
The similar spelling and similar sound can create a false connection.
Online Exposure
The internet contains enormous amounts of informal writing.
People make spelling errors in posts. Comments. Messages. Captions. Forums. And user generated articles.
A misspelled word can appear many times without becoming standard English.
That is an important lesson for English learners. Frequency online does not automatically prove correctness.
A word can be common because many people make the same mistake.
The Main Difference Between Excelerate or Accelerate
There is only one standard choice for normal English writing.
Accelerate.
Still the reason matters.
Accelerate belongs to the semantic field of speed and faster progress.
Related ideas include:
- Speed.
- Motion.
- Rate.
- Growth.
- Progress.
- Change.
- Development.
- Increase.
- Momentum.
- Urgency.
Excel belongs to a different semantic field.
Related ideas include:
- Excellence.
- Skill.
- Achievement.
- Ability.
- Success.
- Performance.
- Superiority.
That difference gives you a strong editing test.
If the sentence is about something moving faster or happening sooner then accelerate is the correct word.
If the sentence is about someone performing exceptionally well then excel may be the correct word.
Do not combine the two into excelerate.
Grammar Of Accelerate
Accelerate is a verb.
It can be used as an intransitive verb. It can also be used as a transitive verb.
That sounds technical but the idea is easy.
An intransitive verb does not need a direct object.
The car accelerated.
The car itself became faster.
A transitive use has an object.
The company accelerated the project.
The company caused the project to move faster.
Cambridge gives both uses. Its advanced entry marks accelerate as an intransitive verb in its speed sense and as an intransitive or transitive verb when it means making something happen faster or sooner.
Present Tense
Use accelerate with I. You. We. And they.
I accelerate when the road is clear.
We accelerate production during busy periods.
Use accelerates with he. She. It. Or a singular noun.
The car accelerates quickly.
Growth accelerates during the summer.
Past Tense
The past tense is accelerated.
The car accelerated suddenly.
The economy accelerated during the final quarter.
The process accelerated after the changes were introduced.
Present Participle
The present participle is accelerating.
The car is accelerating.
Technology is accelerating the pace of change.
Demand is accelerating rapidly.
Past Participle
The past participle is also accelerated.
The project has accelerated.
The process was accelerated by the new equipment.
These forms are useful to memorize as a family.
Accelerate.
Accelerates.
Accelerated.
Accelerating.
Acceleration.
Once you recognize the family the misspelling becomes easier to spot.
Can Accelerate Take An Object
Yes.
This is one of the most useful grammar points for advanced learners.
You can say:
The driver accelerated the car.
You can also say:
The driver accelerated.
In the first sentence the driver causes the car to increase speed.
In the second sentence the driver increases speed.
The word can therefore work in more than one grammatical pattern.
You can also use accelerate with abstract objects.
The new policy accelerated economic growth.
The funding accelerated research.
The discovery accelerated development.
The object does not need to be a physical thing.
That is why accelerate works so naturally in business. Science. Journalism. Economics. And academic writing.
Accelerate In Different Contexts
Driving And Transportation
This is the most literal use.
The driver accelerated onto the highway.
The car accelerated smoothly.
The plane began accelerating along the runway.
The motorcycle accelerated away from the intersection.
Cambridge provides similar examples involving cars. Motorcycles. Vans. And aircraft.
Business
Business writing often uses accelerate in a figurative sense.
The company plans to accelerate growth.
The new strategy could accelerate expansion.
Investment helped accelerate development.
The team wants to accelerate the launch process.
This use is standard and natural.
Science
Scientists use accelerate in both physical and abstract contexts.
The particles were accelerated by the electric field.
Higher temperatures accelerated the reaction.
The treatment accelerated cell growth.
The noun acceleration is also important in science and physics.
Cambridge defines acceleration as an increase in speed or the ability to go faster. It also uses the term for an increase in the rate at which something happens.
Economics
Economists frequently use accelerate to describe changing rates.
Inflation accelerated during the summer.
Economic growth accelerated in the second quarter.
The decline accelerated after the policy change.
The word is useful because it describes a change in the rate itself.
That is different from simply saying something increased.
Consider:
Sales increased.
This says sales became higher.
Sales accelerated.
This suggests the rate of increase became faster.
That difference can matter in precise writing.
Education
Teachers and education writers can use accelerate to describe faster progress.
The program accelerated student learning.
The course accelerated her progress.
Extra practice accelerated his development.
There is also the phrase accelerated learning. This describes approaches or programs designed to help learners progress more quickly.
Accelerate Vs Speed Up
These expressions often mean roughly the same thing but they have different styles.
Speed up is conversational and direct.
Accelerate is more formal and precise.
Compare:
The car sped up.
The car accelerated.
Both are natural.
Now consider business writing:
The company needs to speed up production.
This is perfectly understandable and fairly conversational.
The company needs to accelerate production.
This sounds more formal and is common in reports and professional communication.
Neither is automatically better.
Choose based on the tone and audience.
For a friendly conversation speed up often sounds more natural.
For academic. Scientific. Technical. Or formal business writing accelerate may fit better.
Accelerate Vs Hasten
Hasten means to make something happen sooner or move quickly.
We must hasten the process.
She hastened to finish the work.
Accelerate can carry a similar meaning when talking about making a process faster.
We must accelerate the process.
The difference is mainly tone and context.
Hasten can sound more literary or formal.
Accelerate is common in modern professional. Scientific. Technical. And everyday language.
If you are talking about a vehicle or physical speed then accelerate is much more natural.
The car accelerated.
You would not normally say:
The car hastened.
That sounds unusual.
Accelerate Vs Expedite
Expedite means to make a process happen faster or to cause something to be completed sooner.
We need to expedite the application.
The manager expedited the approval process.
Accelerate can also work.
We need to accelerate the approval process.
The two words overlap but expedite often focuses on removing delay from a process.
Accelerate focuses more broadly on increasing speed or rate.
This distinction can help in professional writing.
Accelerate Vs Advance
Advance can mean move forward. Progress. Or promote development.
The research advanced quickly.
The project advanced after the funding arrived.
Accelerate emphasizes speed.
The research accelerated quickly.
The second sentence suggests that the rate of progress increased.
So:
Advance = move forward.
Accelerate = move faster.
They can describe similar situations but they are not identical.
Accelerate Vs Increase
These words are easy to confuse in business and academic writing.
Increase means become greater in amount. Number. Size. Or degree.
Accelerate means become faster or increase the rate at which something happens.
Compare:
Prices increased.
Prices became higher.
Price growth accelerated.
The rate at which prices were rising became faster.
That is a subtle but important difference.
Good writers use accelerate when the rate of change is the key idea.
Pronunciation Of Accelerate
Cambridge gives the following pronunciation for American English:
/ekˈsel.ɚ.eɪt/
The British form is:
/əkˈsel.ə.reɪt/
The word has three syllables in ordinary pronunciation.
The main stress falls on the second syllable.
The American pronunciation begins with a clear ek sound. The middle syllable contains the sel sound. The final part sounds like rate.
English learners sometimes pronounce every vowel too strongly. Natural English reduces unstressed vowels.
The most useful pronunciation habit is to give the middle syllable the strongest stress.
The spelling excelerate can create an additional mental problem because it encourages an extra vowel. That can make learners feel that the word should have an extra syllable.
It does not.
The standard word is accelerate.
Accelerate And Its Word Family
The word family gives you several useful forms.
Accelerate
Verb.
Costs continue to accelerate.
Accelerates
Third person singular present.
The process accelerates quickly.
Accelerated
Past tense and past participle.
Development accelerated last year.
Accelerating
Present participle.
Demand is accelerating.
Acceleration
Noun.
The car has strong acceleration.
Accelerative
Adjective.
This is a specialized term used mainly in physics and engineering. Cambridge defines it as relating to acceleration or the ability to go faster.
Learning the whole word family can help you avoid isolated spelling mistakes.
Spelling Rules For Accelerate
The spelling is easier if you pay attention to its internal structure.
The word begins with:
accel
Then comes:
erate
Together:
accelerate
The most common error is replacing the first part with something that resembles excel.
That produces:
excelerate
The problem is not an English spelling variation. It is an extra e.
The related noun also keeps the same core:
accelerate
acceleration
That consistency can serve as a useful spelling clue.
When you know the noun acceleration it becomes easier to remember that the verb is accelerate rather than excelerate.
Spelling Changes In Related Forms
The basic spelling remains stable.
accelerate
accelerated
accelerating
accelerates
The final e in the base verb behaves normally when endings are added.
For example:
accelerate → accelerated
The final e remains in the spelling before d.
But:
accelerate → accelerating
drops the final e before ing.
This is a normal English spelling pattern.
Compare:
accelerate
accelerating
You should not write acceleratee or accelerateing.
Etymology Of Accelerate
The history of accelerate provides a useful clue about its spelling.
Etymonline traces the verb to the 1520s in the sense of making something happen sooner and to the 1590s in the sense of making something quicker. It comes from Latin accelerare meaning to hasten or quicken. That Latin verb is connected with celer meaning swift.
The English word therefore has a long history connected with speed and quickness.
That history also connects naturally with related words such as:
- Acceleration.
- Accelerated.
- Accelerating.
- Accelerator.
- Accelerant.
- Accelerando.
The Italian musical term accelerando also comes from the same Latin source. Etymonline dates its English musical use to the nineteenth century and traces it through Italian to Latin accelerare.
The important lesson is that accelerate is not built from excel.
Its history follows a different path.
British And American English
There is no British spelling of accelerate that changes it into excelerate.
Both British and American English use:
accelerate
The main difference you may notice is pronunciation.
Cambridge gives:
British English:
/əkˈsel.ə.reɪt/
American English:
/ekˈsel.ɚ.eɪt/
The spelling stays the same.
Canadian English also uses accelerate.
Australian English uses accelerate as well.
So if you encounter excelerate online you should not assume that it is a regional spelling.
It is not the normal American form.
And it is not the normal British form.
It is not a standard Canadian or Australian spelling.
The extra e is simply not part of the standard word.
Real Life Examples Of Accelerate
The best way to master a spelling is to see it working naturally in different settings.
Everyday Conversation
You need to accelerate before merging onto the highway.
The car started to accelerate.
Don’t accelerate too quickly on a wet road.
The train began to accelerate after leaving the station.
These examples use the physical meaning.
Workplace Writing
We need to accelerate the hiring process.
The company plans to accelerate expansion.
New funding could accelerate development.
The team accelerated the production schedule.
These examples use the broader process meaning.
Email Writing
We need to accelerate the review process so we can meet the deadline.
The new information should accelerate our decision.
Can we accelerate the approval process?
These are natural in professional emails.
Academic Writing
The researchers found that higher temperatures accelerated the reaction.
The intervention accelerated the recovery process.
Economic growth accelerated during the second half of the year.
Technological change has accelerated in recent decades.
Academic writing often uses accelerate because the word can describe changes in rate with precision.
Journalism
Rising demand accelerated the company’s expansion.
The decline accelerated during the final quarter.
The storm accelerated as it moved across the region.
News writing uses the word because it can describe both physical movement and changes in broader processes.
Scientific Writing
The particles were accelerated by the applied field.
The reaction accelerated as the temperature increased.
The treatment accelerated tissue growth.
In scientific contexts precision matters. Accelerate is useful because it can describe an increase in speed or rate.
Social Media
Things are really starting to accelerate.
The project accelerated after we found the right team.
My car accelerates much faster than I expected.
Informal writers may choose speed up instead but accelerate is still perfectly natural.
Common Mistakes With Accelerate
Writing Excelerate
Incorrect:
The process will excelerate next year.
Correct:
The process will accelerate next year.
Writing Accelerate When You Mean Excel
These words are sometimes confused in the other direction.
Incorrect:
She accelerates at mathematics.
Correct:
She excels at mathematics.
Accelerate concerns speed.
Excel concerns exceptional ability.
Confusing Accelerated With Increased
These words are not always interchangeable.
Prices increased.
means prices became higher.
Price growth accelerated.
means the rate of price growth became faster.
The distinction becomes important in journalism. Economics. Science. And business writing.
Using Accelerate For Every Kind Of Progress
Accelerate is useful but it should not replace every word related to progress.
Advance is better.
Improve is better.
Increase is better.
Expedite is better.
Good writing chooses the word that expresses the exact idea.
Adding An Extra Syllable
Because people spell the word as excelerate they may also pronounce it incorrectly.
The extra spelling can encourage an extra vowel sound.
The standard word is accelerate with three syllables.
Cambridge gives the US form as /ekˈsel.ɚ.eɪt/.
Memory Tricks For Excelerate or Accelerate
The strongest memory trick is to connect accelerate with acceleration.
Both begin with:
accel
Think:
Accelerate and acceleration belong together.
If you can remember acceleration then you can usually reconstruct accelerate.
Another useful trick is to separate the two ideas:
Excel means perform well.
Accelerate means move faster.
This is especially useful because excel is one of the main words that helps create the misspelling.
You can also remember the relationship with accelerator.
A car has an accelerator.
Pressing it makes the vehicle move faster.
So:
accelerator → accelerate → acceleration
That word family gives you a strong spelling chain.
Excelerate or Accelerate A Simple Test For The Correct Word
When you are unsure between excelerate and accelerate ask yourself one question.
Am I talking about speed or faster progress?
If yes then choose accelerate.
Examples:
The car will accelerate.
The economy may accelerate.
The process could accelerate.
The company wants to accelerate growth.
If you are talking about outstanding ability then think about excel instead.
She excels at mathematics.
He excels in leadership.
This simple meaning test is more reliable than trying to remember the letters alone.
Excelerate or Accelerate Related Words And Expressions
Synonyms For Accelerate
Depending on the context you can use:
- Speed up.
- Hasten.
- Quicken.
- Expedite.
- Increase the rate.
- Pick up speed.
- Gain speed.
- Advance more quickly.
- Move faster.
These are not perfect substitutes in every sentence.
Speed up is the most conversational.
Expedite often focuses on completing a process sooner.
Quicken can sound more literary.
Accelerate is broad and works well in formal writing.
Opposites Of Accelerate
The most direct opposite is decelerate.
Cambridge lists decelerate as the opposite of accelerate in its dictionary entry.
Other opposites can include:
- Slow down.
- Reduce speed.
- Delay.
- Decelerate.
- Slow the process.
The best choice depends on the sentence.
For physical movement:
The car decelerated.
For a process:
The project slowed down.
Accelerate And Decelerate
These words form a useful pair.
Accelerate means become faster or make something faster.
Decelerate means become slower or make something slower.
Examples:
The car accelerated on the straight road.
The driver decelerated before the turn.
The spelling patterns are also connected.
accelerate
decelerate
That pair can help reinforce the correct spelling.
Accelerate And Acceleration
These two forms are directly related.
Accelerate is the verb.
Acceleration is the noun.
Compare:
The car accelerated quickly.
The car showed strong acceleration.
The noun can refer to an increase in physical speed. It can also describe an increase in the rate at which something happens. Cambridge gives both senses.
For example:
The acceleration of the vehicle was impressive.
The acceleration of economic growth surprised analysts.
This word family is one of the best spelling aids available for learners.
Expert Editors Note About Excelerate or Accelerate
A professional editor would correct excelerate to accelerate in ordinary English writing.
The correction is not a matter of personal style. It is a spelling correction.
Major dictionaries define accelerate as an established verb. Cambridge gives meanings involving increased physical speed and faster processes. It also records related vocabulary such as acceleration and accelerative.
The historical evidence supports the same conclusion. The English verb comes from Latin accelerare and has been used for centuries in senses connected with making something faster or sooner.
There is another useful editorial point.
Do not correct a word only because it looks unfamiliar. Check the intended meaning.
If a writer uses excelerate in a sentence about increasing speed then the correction is clear.
The vehicle will excelerate quickly.
should become:
The vehicle will accelerate quickly.
If the writer is using a coined brand name or a deliberate creative form then the editorial situation is different. A proper name can intentionally break standard spelling conventions.
That is not the same as treating excelerate as the standard English verb.
For ordinary English learning and formal writing the rule is simple.
Use accelerate.
Frequently Asked Questions
Is Excelerate A Correct Spelling
No. Excelerate is not the standard spelling of the English verb meaning to become faster or make something happen faster. The correct word is accelerate. The related noun is acceleration. If you see excelerate in ordinary prose it should normally be treated as a spelling error and changed to accelerate.
Why Is Excelerate A Common Misspelling
The error is easy to make because accelerate contains a sound that resembles the beginning of excel in American English. The familiar word excel can therefore influence the spelling. The words also look similar in the middle. That combination makes excelerate look plausible even though the standard form is accelerate.
How Do You Spell Accelerate
The correct spelling is accelerate. Remember the opening sequence accel. Do not change it to excel. Related words can help you remember it because the same core appears in acceleration. accelerated. And accelerating.
What Does Accelerate Mean
Accelerate means to become faster or to make something faster. It can describe physical movement such as a car increasing speed. It can also describe a process becoming faster such as economic growth accelerating. Cambridge recognizes both the physical and broader process meanings.
What Is The Difference Between Accelerate And Excel
Accelerate means become faster or make something happen faster. Excel means perform extremely well or be exceptionally good at something. A car accelerates. A student excels at mathematics. The similar sound can cause confusion but the meanings are completely different.
Is Accelerate A Verb
Yes. Accelerate is a verb. It can describe something becoming faster and can also describe someone or something causing another process to become faster. Its main forms are accelerate. accelerates. accelerated. and accelerating.
What Is The Past Tense Of Accelerate
The past tense is accelerated.
For example:
The car accelerated quickly.
The past participle is also accelerated.
The process has accelerated.
The spelling does not become excelerated.
How Do You Pronounce Accelerate
In American English Cambridge gives /ekˈsel.ɚ.eɪt/. In British English it gives /əkˈsel.ə.reɪt/. The word has three syllables and the main stress falls on the second syllable.
Final Thoughts
The correct spelling is accelerate.
If you mean to move faster then use accelerate.
If you mean to make a process happen faster then use accelerate.
Use excelerate in ordinary English prose it is almost certainly a misspelling.
The confusion comes mainly from the familiar word excel and from the sound of accelerate. Once you connect accelerate with acceleration and accelerator the spelling becomes much easier to remember.
There is no British or American spelling variation that changes accelerate into excelerate. The standard word remains the same across major varieties of English.
Keep this simple rule in mind.
Excel is about excellence. Accelerate is about speed.
Founding Editor
Maya spent six years as a copyeditor at a regional newspaper before starting Grammist, which is where the “answer first” format came from: newsroom style guides don’t have room for a preamble.
She writes and reviews most of the word-pair and spelling entries, and has final say on anything that goes out under the Grammist name.