[ US /ˈfæst/ ]
[ UK /fˈɑːst/ ]
  1. abstain from eating
    Before the medical exam, you must fast
  2. abstain from certain foods, as for religious or medical reasons
    Catholics sometimes fast during Lent
  1. (used of timepieces) indicating a time ahead of or later than the correct time
    my watch is fast
  2. at a rapid tempo
    the band played a fast fox trot
  3. (of surfaces) conducive to rapid speeds
    a fast road
    grass courts are faster than clay
  4. (of a photographic lens or emulsion) causing a shortening of exposure time
    a fast lens
  5. unwavering in devotion to friend or vow or cause
    loyal supporters
    a firm ally
    fast friends
    the true-hearted soldier...of Tippecanoe
  6. hurried and brief
    a fast visit
    paid a flying visit
    took a flying glance at the book
    a quick inspection
  7. unrestrained by convention or morality
    riotous living
    Congreve draws a debauched aristocratic society
    fast women
    deplorably dissipated and degraded
  8. securely fixed in place
    the post was still firm after being hit by the car
  9. acting or moving or capable of acting or moving quickly
    on the fast track in school
    a fast car
    set a fast pace
    fast film
  10. resistant to destruction or fading
    fast colors
  1. quickly or rapidly (often used as a combining form)
    needs medical help fast
    fast-running rivers
    how fast can he get here?
    fast-opening (or fast-closing) shutters
    ran as fast as he could
    fast-breaking news
  2. firmly or closely
    her foot was stuck fast
    held fast to the rope
    held tight
  1. abstaining from food
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How To Use fast In A Sentence

  • So spake he, and Athene was mightily angered at heart, and chid Odysseus in wrathful words: ‘Odysseus, thou hast no more steadfast might nor any prowess, as when for nine whole years continually thou didst battle with the Trojans for high born Helen, of the white arms, and many men thou slewest in terrible warfare, and by thy device the wide-wayed city of Priam was taken. Book XXII
  • It bothered me a little that I didn't have a pickup, and I couldn't see doing much off road driving with my Mustang fastback.
  • Our interneuronal connections in our brain, for example, process information at chemical signaling speeds of a few hundred feet per second, compared to a billion feet per second for electronics - electronics is a million times faster.
  • The opposite change occurs in what are termed fastigiate varieties, where the branches, in place of assuming more or less of a horizontal direction, become erect and nearly parallel with the main stem as in the Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
  • The trek was a bit monotonous at times - I wanted to go faster - but it was relaxing, enjoyable and worth the sore backside.
  • “And now, Sir John de Walton,” he said, “methinks you are a little churlish in not ordering me some breakfast, after I have been all night engaged in your affairs; and a cup of muscadel would, I think, be no bad induction to a full consideration of this perplexed matter.” Castle Dangerous
  • With a few turns of tape, I fastened the plastic cup to the end of the pole.
  • He's not the fastest player on the books and occasionally he can be a bit casual and sometimes gets caught in possession.
  • A leisurely breakfast - even the motel manager was moaning about the way the Italians "hogged" the muffins this morning and drank cups of milk instead of putting it on their bran flakes! TravelPod.com TravelStream™ — Recent Entries at TravelPod.com
  • Last time I took my pulse, it was a bit fast.
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