speedy

adjective

/ˈspiːdi/

(comparative speedier, superlative speediest)

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happening or done quickly or without delay synonym rapid
- We wish you a speedy recovery (= from an illness or injury).
- a speedy reply
moving or working very quickly
- speedy computers
Which Word? fast / quick / rapid
fast / quick / rapidThese adjectives are frequently used with the following nouns:
fast ~ quick ~ rapid ~
car glance change
train look growth
bowler reply increase
pace decision decline
lane way progress
- Fast is used especially to describe a person or thing that moves or is able to move at great speed.
- Quick is more often used to describe something that is done in a short time or without delay.
- Rapid, swift and speedy are more formal words.
- Rapid is most commonly used to describe the speed at which something changes. It is not used to describe the speed at which something moves or is done:
  a rapid train
  We had a rapid coffee.
- Swift usually describes something that happens or is done quickly and immediately:
  a swift decision
  The government took swift action.
- Speedy has a similar meaning:
  a speedy recovery.
  It is used less often to talk about the speed at which something moves:
  a speedy car.
- For the use of fast and quick as adverbs, .