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fast
/fæst/
Synonyms of fast Antonyms of fast Examples of fast Usage of fast Parts of fast Definition that contains fast Words sounding like fast Explanation of fast

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Definitions of fast
  1. adjective
    unwavering in devotion to friend or vow or cause
    "fast friends"

    Similar: 

    firm loyal truehearted faithful
  2. adverb
    firmly or closely
    "held fast to the rope" "her foot was stuck fast"

    Similar: 

    tight
  3. adjective
    securely fixed in place

    Similar: 

    firm immobile fixed
  4. adjective
    hurried and brief
    "a fast visit"

    Similar: 

    flying quick hurried
  5. noun
    abstaining from food

    Similar: 

    fasting
    type of:
    abstinence
  6. adjective
    unrestrained by convention or morality
    "fast women"

    Similar: 

    debauched degenerate degraded dissipated dissolute libertine profligate riotous immoral
  7. verb
    abstain from certain foods, as for religious or medical reasons
    "Catholics sometimes fast during Lent"
  8. verb
    abstain from eating
    "Before the medical exam, you must fast"
  9. adjective
    acting or moving or capable of acting or moving quickly
    "fast film" "on the fast track in school" "set a fast pace" "a fast car"

    Similar: 

    winged accelerated alacritous instantaneous meteoric prompt quick rapid red-hot scurrying smart speedy straightaway swift windy blistering double-quick express fast-breaking fast-paced fleet high-speed high-velocity hot hurrying immediate instant
    Opposite:
    slow
  10. adjective
    at a rapid tempo
    "the band played a fast fox trot"

    Similar: 

    presto andantino allegretto vivace prestissimo allegro
    Opposite:
    slow
  11. adjective
    (of a photographic lens or emulsion) causing a shortening of exposure time
    "a fast lens"

    Similar: 

    causative
  12. adjective
    (of surfaces) conducive to rapid speeds
    "a fast road" "grass courts are faster than clay"

    Similar: 

    smooth
  13. adjective
    resistant to destruction or fading
    "fast colors"

    Similar: 

    imperviable impervious
  14. (used of timepieces) indicating a time ahead of or later than the correct time
    "my watch is fast"
    Opposite:
    slow
Antonyms of fast
slow
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