C1 noun #2,500 よく出る 3分で読める

accelerate

To accelerate means to make something go faster or happen more quickly.

Explanation at your level:

To accelerate means to go faster. If you are in a car, you accelerate to increase your speed. It is a very useful word when you want to talk about moving quickly.

When you accelerate something, you make it happen sooner. For example, if you study hard, you might accelerate your learning. It is a common word in news and science.

In intermediate English, accelerate is often used to describe progress. You can accelerate a process, a project, or a trend. It sounds more professional than just saying 'speed up'.

At this level, you will notice accelerate used in business and academic contexts. It implies a deliberate effort to increase the rate of change. It is a strong, active verb for formal writing.

Advanced users employ accelerate to discuss complex systems, such as accelerating climate change or accelerating economic recovery. It carries a sense of urgency and systemic impact.

Mastery of accelerate involves understanding its nuanced role in technical and literary contexts. It can describe the rapid evolution of ideas or the compounding nature of velocity in physics, reflecting a high level of precision.

30秒でわかる単語

  • Accelerate means to increase speed.
  • It is a versatile verb for objects and processes.
  • The noun form is acceleration.
  • It is common in professional and technical contexts.

When you accelerate, you are pushing the pedal down on life! Whether you are talking about a car speeding up on the highway or a project that is moving ahead of schedule, this word captures the essence of increasing speed.

In physics, acceleration is a very specific measurement of how quickly an object changes its velocity. However, in our everyday conversations, we use it much more broadly. If a company wants to accelerate growth, they are looking for ways to expand faster than they currently are. It is all about momentum and moving forward with greater intensity.

The word accelerate has a fascinating journey through history. It comes from the Latin word accelerare, which itself is built from ad- (meaning 'to') and celer (meaning 'swift').

It entered the English language in the 16th century. Back then, it was used to describe anything that was being hastened or hurried along. Interestingly, the root celer is also the ancestor of the word celerity, which is a fancy, formal way of saying 'swiftness' or 'speed.' It is a great example of how Latin roots continue to shape our modern scientific and casual vocabulary today.

You will see accelerate used in both formal and casual settings. In business, you might hear about accelerating digital transformation or accelerating a timeline. These are standard professional phrases.

In casual conversation, we might say, 'We need to accelerate our plans to get there on time.' It is a versatile verb that works well whenever you want to emphasize that something is not moving fast enough. Just remember, it is a transitive verb, meaning it usually takes an object—you accelerate something.

While 'accelerate' itself isn't always in idioms, it is related to many fast-paced expressions:

  • Put the pedal to the metal: To accelerate as much as possible.
  • Pick up the pace: To increase speed.
  • Fast track: To accelerate a project's completion.
  • Shift into high gear: To accelerate efforts significantly.
  • Hit the ground running: To start a task and immediately accelerate productivity.

Accelerate is a regular verb. Its past tense is accelerated, and its present participle is accelerating. The stress falls on the second syllable: ak-SEL-uh-rayt.

In British and American English, the pronunciation is quite similar, though the 'r' sound in the final syllable is often more pronounced in American English. It rhymes with words like deliberate (as a verb) and reiterate. Using it correctly usually involves a direct object, such as 'The driver accelerated the car.'

Fun Fact

The root 'celer' is the same root found in 'celerity'.

Pronunciation Guide

UK /əkˈsel.ə.reɪt/

Clear 'ak' sound, soft 'sel', 'uh' sound, 'rayt'.

US /əkˈsel.ə.reɪt/

Similar to UK, slightly more emphasis on the final 't'.

Common Errors

  • Mispronouncing the 'c' as 's'
  • Stress on the wrong syllable
  • Dropping the 'r' sounds

Rhymes With

deliberate reiterate exhilarate invigorate cooperate

Difficulty Rating

読解 2/5

Easy to read

Writing 2/5

Easy to write

Speaking 2/5

Easy to speak

リスニング 2/5

Easy to listen

What to Learn Next

Prerequisites

speed fast car

Learn Next

acceleration velocity expedite

上級

momentum trajectory catalyst

Grammar to Know

Transitive Verbs

He accelerated the car.

Past Participle Usage

The accelerated plan.

Adverb Placement

Rapidly accelerated.

Examples by Level

1

The car began to accelerate.

car / began / speed up

Verb usage

2

He accelerated his bike.

he / speeded up / bike

Transitive verb

3

The train will accelerate now.

train / will / go faster

Future tense

4

Don't accelerate too fast.

do not / speed up / quickly

Imperative

5

We accelerate on the highway.

we / speed up / road

Present tense

6

The plane accelerated quickly.

plane / speeded up / fast

Past tense

7

Why did you accelerate?

why / did / you / speed up

Question form

8

It helps to accelerate.

it / helps / to speed up

Infinitive

1

The project will accelerate next week.

2

We need to accelerate our work.

3

The economy is starting to accelerate.

4

Can you accelerate the delivery?

5

The growth began to accelerate.

6

Technology helps accelerate change.

7

He accelerated to pass the truck.

8

The process was accelerated by new software.

1

The company hopes to accelerate its expansion.

2

We must accelerate the pace of reform.

3

The warm weather accelerated the melting of the ice.

4

They are looking for ways to accelerate production.

5

The new policy will accelerate the transition.

6

His success accelerated his career growth.

7

The engine accelerated smoothly.

8

The government accelerated the vaccination program.

1

The startup aims to accelerate innovation in the tech sector.

2

Global warming is accelerating the rise in sea levels.

3

The committee decided to accelerate the review process.

4

We need to accelerate the implementation of these safety measures.

5

The sudden demand accelerated the supply chain issues.

6

The research team accelerated their data analysis.

7

The economic crisis accelerated the need for change.

8

He accelerated his pace to catch the bus.

1

The digital revolution has accelerated the obsolescence of traditional media.

2

The catalyst was designed to accelerate the chemical reaction.

3

The CEO sought to accelerate the company's shift toward sustainability.

4

The rapid adoption of AI has accelerated the evolution of the job market.

5

The central bank acted to accelerate economic recovery.

6

The project was accelerated to meet the strict deadline.

7

The pandemic accelerated the move to remote work.

8

The intense pressure accelerated his decision-making process.

1

The unprecedented rate of technological change has accelerated the fragmentation of global markets.

2

The architect of the plan sought to accelerate the structural transformation of the institution.

3

The sudden influx of capital accelerated the firm's trajectory toward market dominance.

4

The geopolitical tensions have accelerated the realignment of international alliances.

5

The scientific breakthrough accelerated the development of the new vaccine.

6

The unforeseen event accelerated the collapse of the negotiations.

7

The rapid pace of urbanization has accelerated the demand for infrastructure.

8

The systemic failure accelerated the erosion of public trust.

類義語

hasten expedite quicken precipitate facilitate stimulate

反対語

decelerate delay hinder

よく使う組み合わせ

accelerate growth
accelerate the process
accelerate the pace
accelerate development
accelerate change
significantly accelerate
rapidly accelerate
accelerate recovery
accelerate innovation
accelerate progress

Idioms & Expressions

"Full speed ahead"

Move as fast as possible

It is full speed ahead for the project.

neutral

"Step on it"

Drive faster

Step on it, or we will miss the train!

casual

"Pick up the pace"

Increase speed

We need to pick up the pace to finish on time.

neutral

"In the fast lane"

Living a very busy/fast life

He has been living in the fast lane lately.

casual

"Hit the gas"

Accelerate a vehicle

Hit the gas when the light turns green.

casual

"Race against time"

Working quickly to finish

It is a race against time now.

neutral

Easily Confused

accelerate vs Exhilarate

Similar sound

Exhilarate means to thrill, accelerate means to speed up

The ride exhilarated me; the car accelerated quickly.

accelerate vs Decelerate

Opposite meaning

Decelerate is to slow down

He accelerated, then decelerated.

accelerate vs Hasten

Similar meaning

Hasten is more formal/literary

He hastened his steps.

accelerate vs Expedite

Similar meaning

Expedite is for processes

Please expedite this.

Sentence Patterns

A2

Subject + accelerate + object

The driver accelerated the car.

B1

Subject + accelerate + adverb

The car accelerated rapidly.

B2

It + helps + to accelerate + noun

It helps to accelerate growth.

B2

The + noun + was + accelerated

The process was accelerated.

C1

To + accelerate + noun

To accelerate progress, we need help.

語族

Nouns

acceleration The act of speeding up

Verbs

accelerate To speed up

Adjectives

accelerated Made faster

関連

velocity Scientific measure of speed

How to Use It

frequency

7

Formality Scale

Expedite (Formal) Accelerate (Neutral) Speed up (Casual) Hurry (Casual)

よくある間違い

Using 'accelerate' for people walking Hurry or speed up
Accelerate is usually for objects, vehicles, or processes.
Confusing with 'exhilarate' Exhilarate means to thrill
They sound similar but have different meanings.
Using 'accelerate' as a noun Acceleration
Accelerate is a verb.
Saying 'accelerate the speed' Increase the speed
Accelerate already includes the concept of speed.
Missing the object Accelerate the car
It is a transitive verb; it needs an object.

Tips

💡

Memory Palace

Imagine a car engine growing wings.

💡

Business Context

Use it to show you are proactive.

🌍

Car Culture

It's a key word in driving.

💡

Transitive Rule

Always have an object.

💡

The 'c' sound

It sounds like 'ks'.

💡

Don't use as noun

Use acceleration instead.

💡

Latin roots

Celer means swift.

💡

Flashcards

Pair with 'decelerate'.

💡

Variety

Use it to replace 'speed up'.

💡

Confidence

Use it to sound more precise.

Memorize It

Mnemonic

AC-CEL-ER-ATE: A Car CELerates ERy ATE (every time it eats gas).

Visual Association

A car pedal being pushed down.

Word Web

Speed Velocity Momentum Haste

チャレンジ

Use the word 'accelerate' three times today.

語源

Latin

Original meaning: To hasten

文化的な背景

None.

Commonly used in automotive and business contexts.

Used in many car commercials. Used in physics textbooks.

Practice in Real Life

Real-World Contexts

Driving

  • Accelerate slowly
  • Accelerate on the highway
  • Do not accelerate here

Business

  • Accelerate growth
  • Accelerate the timeline
  • Accelerate innovation

Science

  • Accelerate particles
  • Rate of acceleration
  • Constant acceleration

General Progress

  • Accelerate recovery
  • Accelerate change
  • Accelerate learning

Conversation Starters

"What is one thing you would like to accelerate in your life?"

"Do you think technology is accelerating too fast?"

"How does a car accelerate?"

"Why do businesses want to accelerate growth?"

"Can you name a process that should be accelerated?"

Journal Prompts

Write about a time you had to accelerate your plans.

How does the concept of speed change your life?

Describe a situation where accelerating was necessary.

If you could accelerate one global change, what would it be?

よくある質問

8 問

No, it is a verb.

Subject + accelerate + object.

Accelerated.

Not usually, unless metaphorically.

It is neutral and professional.

Yes, but quicken is more poetic.

Very common.

Acceleration.

自分をテスト

fill blank A1

The car started to ___.

正解! おしい! 正解: accelerate

Accelerate means to speed up.

multiple choice A2

Which means to speed up?

正解! おしい! 正解: Accelerate

Accelerate is a synonym for speed up.

true false B1

Accelerate is a noun.

正解! おしい! 正解: 間違い

It is a verb.

match pairs B1

Word

意味

All matched!

They are synonyms.

sentence order B2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

We need to accelerate.

fill blank C1

The new policy will ___ economic growth.

正解! おしい! 正解: accelerate

Accelerate fits the context of growth.

multiple choice A2

What is the noun form?

正解! おしい! 正解: Acceleration

Acceleration is the noun.

true false B2

You can accelerate a person.

正解! おしい! 正解: 間違い

Usually used for things or processes.

match pairs C1

Word

意味

All matched!

Both mean to speed up.

sentence order C2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

The process was accelerated.

スコア: /10

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