Thesaurus

fast

adjective

Synonyms and Antonyms of fast

1 moving, proceeding, or acting with great speed
  • The fast pace of construction resulted in our new house being done ahead of schedule.
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3 firmly positioned in place and difficult to dislodge
  • The rusty, old screws are so fast in the fitting that there's no hope of getting them out.
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4 given to or marked by cheating and deception
  • Rolling back odometers was just one of the fast practices that the used-car dealer was guilty of.
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5 marked by the ability to withstand stress without structural damage or distortion
  • As the storm approached, we checked to see that every thing on the outside of the house was fast and locked in position.
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7 having or showing quickness of mind
  • I don't know how to operate this machine, but I'm a fast learner.
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Synonym Discussion of fast

fast, rapid, swift, fleet, quick, speedy, hasty, expeditious mean moving, proceeding, or acting with celerity. fast and rapid are very close in meaning, but fast applies particularly to the thing that moves
    • fast horses
and rapid to the movement itself.
    • rapid current
swift suggests great rapidity coupled with ease of movement.
    • returned the ball with one swift stroke
fleet adds the implication of lightness and nimbleness.
    • fleet runners
quick suggests promptness and the taking of little time.
    • a quick wit
speedy implies quickness of successful accomplishment
    • speedy delivery of mail
and may also suggest unusual velocity. hasty suggests hurry and precipitousness and often connotes carelessness.
    • a hasty inspection
expeditious suggests efficiency together with rapidity of accomplishment.
    • the expeditious handling of an order

fast

adverb

Synonyms and Antonyms of fast

1 with great speed
  • Run as fast as you can to get help.
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Phrases Synonymous with fast

a mile a minute, at full throttle, at full tilt, by leaps and bounds, in a hurry, in short order, like a shot, like gangbusters, like wildfire

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2 to a full extent or degree
  • Everyone in camp was fast asleep within minutes of hitting the sack.
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Phrases Synonymous with fast

all the way, at length, down the line, down to the ground, for fair, in whole, to bits, to pieces, to the hilt, to the max

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