American English

Definition of speedy adjective from the Oxford Advanced American Dictionary

     

    speedy

     adjective
    adjective
    NAmE//ˈspidi//
     
    (speedier, speediest)
     
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  1. 1happening or done quickly or without delay synonym rapid We wish you a speedy recovery (= from an illness or injury). a speedy reply
  2. 2moving or working very quickly speedy computers Which Word?fast / quick / rapidThese adjectives are frequently used with the following nouns:
    fast ~quick ~rapid ~
    carglancechange
    trainlookgrowth
    runnerreplyincrease
    pacedecisiondecline
    lanewayprogress
    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, see the usage note at quick.
NAmE//ˈspidl̩i//
 
adverb All inquiries will be dealt with as speedily as possible.
See the Oxford Advanced Learner's Dictionary entry: speedy