Fast: meaning, definitions and examples

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fast

 

[ fɑːst ]

Adverb / Adjective / Noun
Oxford 3000
Context #1 | Adverb

speed

Moving or able to move quickly.

Synonyms

quickly, rapidly, speedily.

Which Synonym Should You Choose?

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Word Description / Examples
fast

Describes both speed and firmness; common in both casual and formal speech. Can refer to physical speed or an action being done quickly.

  • The car is very fast.
  • She ran fast to catch the bus.
quickly

Emphasizes a short duration of time, often used when describing actions. It is common in everyday conversation and writing.

  • He quickly finished his homework.
  • She quickly ran out of the room.
rapidly

Used in more formal or scientific contexts. Often describes processes or changes rather than physical speed.

  • Technology is advancing rapidly.
  • The disease spread rapidly through the town.
speedily

Synonymous with 'quickly' but slightly more formal. Less commonly used in everyday language.

  • The committee speedily resolved the issue.
  • Please respond speedily to avoid delays.

Examples of usage

  • He ran fast to catch the bus.
  • She typed fast on the keyboard.
  • The car drove fast down the highway.
Context #2 | Adjective

speed

Moving or able to move quickly.

Synonyms

quick, rapid, speedy.

Which Synonym Should You Choose?

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Word Description / Examples
fast

Describes something or someone moving or capable of moving at a high speed. Often used for physical speed or performance.

  • He runs very fast
  • The car is incredibly fast
quick

Implies something happening in a short amount of time. Often used for actions or responses.

  • She gave a quick answer
  • I need a quick fix
rapid

Refers to actions or processes happening quickly over time or in a sequence, often used in scientific or formal contexts.

  • The patient's recovery was rapid
  • There was rapid growth in the economy
speedy

Carries an informal or slightly exaggerated tone, usually implying promptness or swiftness.

  • We need a speedy resolution
  • She's a speedy typist

Examples of usage

  • He is a fast runner.
  • She has a fast car.
  • The cheetah is one of the fastest animals.
Context #3 | Noun

time

A period of time when something happens quickly or in a short time.

Synonyms

brief time, quickly, short period.

Which Synonym Should You Choose?

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Word Description / Examples
fast

Appropriate when describing quick speed or rapid action. Commonly used for physical speed.

  • The car is very fast
  • He ran fast to catch the bus
quickly

Utilized to describe the speed at which an action is performed.

  • He quickly finished his homework
  • She responded quickly to the email
short period

Refers to a small length of time and is suitable for general use.

  • I'll be back in a short period
  • The project was completed in a short period
brief time

Used to describe a short duration, usually in a formal or neutral context.

  • We only have a brief time before the meeting starts
  • She solved the problem in a brief time

Examples of usage

  • I'll be back in a fast, don't worry.
  • The meeting was over in a fast.

Translations

Translations of the word "fast" in other languages:

🇵🇹 rápido

🇮🇳 तेज़

🇩🇪 schnell

🇮🇩 cepat

🇺🇦 швидкий

🇵🇱 szybki

🇯🇵 速い (はやい, hayai)

🇫🇷 rapide

🇪🇸 rápido

🇹🇷 hızlı

🇰🇷 빠른 (ppareun)

🇸🇦 سريع

🇨🇿 rychlý

🇸🇰 rýchly

🇨🇳 快 (kuài)

🇸🇮 hitro

🇮🇸 fljótur

🇰🇿 жылдам

🇬🇪 სწრაფი (stsrapi)

🇦🇿 sürətli

🇲🇽 rápido

Etymology

The word 'fast' originated from the Old English 'fæst', meaning firmly fixed, steadfast, secure, fortified. Over time, it evolved to also include the meaning of quick or rapid. The use of 'fast' to describe speed dates back to the 16th century, with its current adverbial form established by the 19th century. The word has maintained its dual meaning of both speed and abstinence from food for religious reasons.

See also: fastball, fasten, fastness.

Word Frequency Rank

This word ranks #1,508, placing it within important intermediate vocabulary. Learning it will significantly improve your ability to express yourself in English.