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English Dictionary

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 fast fast /ˈfæst/

adjective

  1. () Acting or moving or capable of acting or moving quickly  ( fast )
    acting or moving or capable of acting or moving quickly
     Fast film
    fast film
     On the fast track in school
    on the fast track in school
     Set a fast pace
    set a fast pace
     A fast car
    a fast car
  2. (of a photographic lens or emulsion) causing a shortening of exposure time  ( fast )
    (of a photographic lens or emulsion) causing a shortening of exposure time
     A fast lens
    a fast lens
  3. Unwavering in devotion to friend, vow or cause  ( fast , firm , loyal , truehearted )
    unwavering in devotion to friend, vow or cause
     A firm ally
    a firm ally
     Loyal supporters
    loyal supporters
     The true-hearted soldier...of Tippecanoe
    the true-hearted soldier...of Tippecanoe
     Fast friends
    fast friends
  4. (music) at a rapid tempo  ( fast )
    (music) at a rapid tempo
     The band played a fast fox trot
    the band played a fast fox trot
  5. (used of timepieces) indicating a time ahead of or later than the correct time  ( fast )
    (used of timepieces) indicating a time ahead of or later than the correct time
     My watch is fast
    my watch is fast
  6. Securely fixed in place  ( fast , firm , immobile )
    securely fixed in place
     The post was still firm after being hit by the car
    the post was still firm after being hit by the car
  7. Hurried and brief  ( fast , flying , quick )
    hurried and brief
     Paid a flying visit
    paid a flying visit
     Took a flying glance at the book
    took a flying glance at the book
     A quick inspection
    a quick inspection
     A fast visit
    a fast visit
  8. Unrestrained by convention or morality  ( debauched , degenerate , degraded , dissipated , dissolute , fast , libertine , profligate , riotous )
    unrestrained by convention or morality
     Congreve draws a debauched aristocratic society
    Congreve draws a debauched aristocratic society
     Deplorably dissipated and degraded
    deplorably dissipated and degraded
     Riotous living
    riotous living
     Fast women
    fast women
  9. Resistant to destruction or fading  ( fast )
    resistant to destruction or fading
     Fast colors
    fast colors
  10. (of surfaces) conducive to rapid speeds  ( fast )
    (of surfaces) conducive to rapid speeds
     A fast road
    a fast road
     Grass courts are faster than clay
    grass courts are faster than clay

adverb

  1. () Quickly or rapidly (often used as a combining form)  ( fast )
    quickly or rapidly (often used as a combining form)
     How fast can he get here?
    how fast can he get here?
     Ran as fast as he could
    ran as fast as he could
     Needs medical help fast
    needs medical help fast
     Fast-running rivers
    fast-running rivers
     Fast-breaking news
    fast-breaking news
     Fast-opening (or fast-closing) shutters
    fast-opening (or fast-closing) shutters
  2. () Firmly or closely  ( fast , tight )
    firmly or closely
     Held fast to the rope
    held fast to the rope
     Her foot was stuck fast
    her foot was stuck fast
     Held tight
    held tight

noun

  1. () Abstaining from food  ( fasting , fast )
    abstaining from food
     Observing a 24-hour fast is a ritual for many during the holy month.
    Observing a 24-hour fast is a ritual for many during the holy month.

verb

  1. Abstain from eating  ( fast )
    abstain from eating
     Before the medical exam, you must fast
    Before the medical exam, you must fast
  2. Abstain from certain foods, as for religious or medical reasons  ( fast )
    abstain from certain foods, as for religious or medical reasons
     Catholics sometimes fast during Lent
    Catholics sometimes fast during Lent