1. acting or moving or capable of acting or moving quickly
- fast car
- on the fast track in school
- set a fast pace
Similar word(s): accelerated, alacritous, blistering, hot, express, fleet, swift, hurrying, scurrying, immediate, prompt, quick, straightaway, instant, instantaneous, meteoric, speedy, rapid, smart, winged, windy, sudden, hurried
2. (used of timepieces) indicating a time ahead of or later than the correct time
- my watch is fast
3. at a rapid tempo
- the band played a fast fox trot
4. (of surfaces) conducive to rapid speeds
- a fast road
- grass courts are faster than clay
Similar word(s): smooth
5. resistant to destruction or fading
- fast colors
6. unrestrained by convention or morality
- fast women
7. hurried and brief
- a fast visit
8. securely fixed in place
9. unwavering in devotion to friend or vow or cause
- fast friends
10. (of a photographic lens or emulsion) causing a shortening of exposure time
- a fast lens
Similar word(s): causative
Sentences with fast as an adjective:
- That rope is dangerously loose. Make it fast!
- I am going to buy a fast car.
- a fast racket, or tennis court; a fast track; a fast billiard table
- All the washing has come out pink. That red tee-shirt was not fast.
- She's fast – she slept with him on their first date..
- There must be something wrong with the hall clock. It is always fast.
1. quickly or rapidly (often used as a combining form)
- how fast can he get here?
- ran as fast as he could
- needs medical help fast
2. firmly or closely
- held fast to the rope
- her foot was stuck fast
Similar word(s): tight
Sentences with fast as an adverb:
- Hold this rope as fast as you can.
- He is fast asleep.
- The horsemen came fast on our heels.
- Do it as fast as you can.
- I think my watch is running fast.
1. (archery) Short for "stand fast", a warning not to pass between the arrow and the target
1. abstain from certain foods, as for religious or medical reasons
- Catholics sometimes fast during Lent
2. abstain from eating
- Before the medical exam, you must fast
Sentences with fast as a verb:
- Muslims fast during Ramadan.