fast meaning and definition

FAST noun

Definition of fast (noun)

1. abstaining from food
   • synonyms: fasting

FAST verb

Definition of fast (verb)

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"

FAST adjective

Definition of fast (adjective)

1. 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"
   • antonym: slow
2. (used of timepieces) indicating a time ahead of or later than the correct time
   • "my watch is fast"
   • antonym: slow
3. at a rapid tempo
   • "the band played a fast fox trot"
   • antonym: slow
4. (of surfaces) conducive to rapid speeds
   • "a fast road"; "grass courts are faster than clay"
5. resistant to destruction or fading
   • "fast colors"
6. unrestrained by convention or morality
   • "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
   • synonyms: debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous
7. hurried and brief
   • "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
   • synonyms: flying, quick
8. securely fixed in place
   • "the post was still firm after being hit by the car"
   • synonyms: firm, immobile
9. unwavering in devotion to friend or vow or cause
   • "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison; "fast friends"
   • synonyms: firm, loyal, truehearted
10. (of a photographic lens or emulsion) causing a shortening of exposure time
    • "a fast lens"

FAST adverb

Definition of fast (adverb)

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"; "fast-running rivers"; "fast-breaking news"; "fast-opening (or fast-closing) shutters"
2. firmly or closely
   • "held fast to the rope"; "her foot was stuck fast"; "held tight"
   • synonyms: tight