fast

1. Acting or moving or capable of acting or moving quickly (synset 300979699)
   "fast film"; "on the fast track in school"; "set a fast pace"; "a fast car"
   also:

   • sudden - happening without warning or in a short space of time
   • hurried - moving rapidly or performed quickly or in great haste
   tells us about: fastness, speed, swiftness - a rate (usually rapid) at which something happens
   similar to:

   • accelerated - speeded up, as of an academic course
   • alacritous - quick and eager
   • blistering, hot, red-hot - very fast; capable of quick response and great speed
   • double-quick - (of a marching cadence) very quick
   • express - without unnecessary stops
   • fast-breaking - occurring rapidly as a series of events in rapid succession
   • fast-paced - of communication that proceeds rapidly
   • fleet, swift - moving very fast
   • high-speed, high-velocity - operating at high speed
   • hurrying, scurrying - moving with great haste
   • immediate, prompt, quick, straightaway - performed with little or no delay
   • instant, instantaneous - occurring with no delay
   • meteoric - like a meteor in speed or brilliance or transience
   • quick, speedy - accomplished rapidly and without delay
   • rapid - done or occurring in a brief period of time
   • rapid, speedy - characterized by speed; moving with or capable of moving with high speed
   • smart - quick and brisk
   • winged - very fast; as if with wings
   • windy - resembling the wind in speed, force, or variability
2. (used of timepieces) indicating a time ahead of or later than the correct time (synset 300986764)
   "my watch is fast"
3. At a rapid tempo (synset 300985009)
   "the band played a fast fox trot"
   referred to in: music - an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner
   similar to:

   • allegro - (of tempo) fast
   • allegretto - (of tempo) faster than allegro
   • andantino - (of tempo) moderately fast
   • presto - (of tempo) very fast
   • prestissimo - (of tempo) as fast as possible
   • vivace - (of tempo) very fast and lively
4. (of surfaces) conducive to rapid speeds (synset 302245246)
   "a fast road"; "grass courts are faster than clay"
   similar to: smooth - having a surface free from roughness or bumps or ridges or irregularities
5. Resistant to destruction or fading (synset 301778636)
   "fast colors"
   similar to: imperviable, impervious - not admitting of passage or capable of being affected
6. Unrestrained by convention or morality (synset 301553629)
   "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
   similar to: immoral - deliberately violating accepted principles of right and wrong
   same as: debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous
7. Hurried and brief (synset 301273596)
   "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
   similar to: hurried - moving rapidly or performed quickly or in great haste
   same as: flying, quick
8. Securely fixed in place (synset 301063410)
   "the post was still firm after being hit by the car"
   similar to: fixed - securely placed or fastened or set
   same as: firm, immobile
9. Unwavering in devotion to friend or vow or cause (synset 300962433)
   "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"; "fast friends"
   similar to: faithful - steadfast in affection or allegiance
   same as: firm, loyal, truehearted
10. (of a photographic lens or emulsion) causing a shortening of exposure time (synset 300324771)
    "a fast lens"
    similar to: causative - producing an effect

1. Abstaining from food (synset 101071904)
   is a type of: abstinence - act or practice of refraining from indulging an appetite
   subtypes:

   • diet, dieting - the act of restricting your food intake (or your intake of particular foods)
   • hunger strike - a voluntary fast undertaken as a means of protest
   • ramadan - (Islam) a fast (held from sunrise to sunset) that is carried out during the Islamic month of Ramadan
   same as: fasting

1. Quickly or rapidly (often used as a combining form) (synset 400086488)
   "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 (synset 400086892)
   "held fast to the rope"; "her foot was stuck fast"; "held tight"
   same as: tight

1. Abstain from certain foods, as for religious or medical reasons (synset 201192137)
   "Catholics sometimes fast during Lent"
   is a type of: abstain, desist, refrain - choose not to consume
   subtypes: diet - follow a regimen or a diet, as for health reasons
2. Abstain from eating (synset 201191960)
   "Before the medical exam, you must fast"
   is a type of: abstain, desist, refrain - choose not to consume
   subtypes: diet - eat sparingly, for health reasons or to lose weight

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