fast

nouns

abstaining from food

verbs

abstain from certain foods, as for religious or medical reasons
"Catholics sometimes fast during Lent"
is derived from
is a type of (narrower)
choose not to consume
"I abstain from alcohol"
abstain from eating
"Before the medical exam, you must fast"
is derived from
is a type of (narrower)
choose not to consume
"I abstain from alcohol"

adjectives

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"
is derived from
antonym
is similar to
speeded up, as of an academic course
"in an accelerated program in school"
is similar to
quick and eager
"an alacritous response to the invitation"
is similar to
very fast; capable of quick response and great speed
"a hot sports car"; "a blistering pace"; "got off to a hot start"; "in hot pursuit"; "a red-hot line drive"
is similar to
(of a marching cadence) very quick
is similar to
without unnecessary stops
"an express train"; "an express shipment"
is similar to
occurring rapidly as a series of events in rapid succession
"the broadcast was interrupted by a fast-breaking news story about the invasion"
is similar to
of communication that proceeds rapidly
"a fast-paced talker"; "fast-paced fiction"
is similar to
moving very fast
"fleet of foot"; "the fleet scurrying of squirrels"; "a swift current"; "swift flight of an arrow"; "a swift runner"
is similar to
operating at high speed
"a high-speed food processor"; "a high-velocity shell"
is similar to
moving with great haste
"affection for this hurrying driving...little man"; "lashed the scurrying horses"
is similar to
performed with little or no delay
"an immediate reply to my letter"; "a prompt reply"; "was quick to respond"; "a straightaway denial"
is similar to
occurring with no delay
"relief was instantaneous"; "instant gratification"
is similar to
like a meteor in speed or brilliance or transience
"a meteoric rise to fame"
is similar to
accomplished rapidly and without delay
"was quick to make friends"; "his quick reaction prevented an accident"; "hoped for a speedy resolution of the problem"; "a speedy recovery"; "he has a right to a speedy trial"
is similar to
done or occurring in a brief period of time
"a rapid rise through the ranks"
is similar to
characterized by speed; moving with or capable of moving with high speed
"a rapid movement"; "a speedy car"; "a speedy errand boy"
is similar to
quick and brisk
"I gave him a smart salute"; "we walked at a smart pace"
is similar to
very fast; as if with wings
"on winged feet"
is similar to
resembling the wind in speed, force, or variability
"a windy dash home"
see also
happening without warning or in a short space of time
"a sudden storm"; "a sudden decision"; "a sudden cure"
see also
moving rapidly or performed quickly or in great haste
"a hurried trip to the store"; "the hurried life of a city"; "a hurried job"
is an attribute of
a rate (usually rapid) at which something happens
"the project advanced with gratifying speed"
(used of timepieces) indicating a time ahead of or later than the correct time
"my watch is fast"
antonym
at a rapid tempo
"the band played a fast fox trot"
is derived from
antonym
is similar to
(of tempo) fast
is similar to
(of tempo) faster than allegro
is similar to
(of tempo) moderately fast
is similar to
(of tempo) very fast
is similar to
(of tempo) as fast as possible
is similar to
(of tempo) very fast and lively
domain category
an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner
(of surfaces) conducive to rapid speeds
"a fast road"; "grass courts are faster than clay"
is similar to
having a surface free from roughness or bumps or ridges or irregularities
"smooth skin"; "a smooth tabletop"; "smooth fabric"; "a smooth road"; "water as smooth as a mirror"
resistant to destruction or fading
"fast colors"
is similar to
not admitting of passage or capable of being affected
"a material impervious to water"; "someone impervious to argument"
unrestrained by convention or morality
"Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
hurried and brief
"paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
is derived from
securely fixed in place
"the post was still firm after being hit by the car"
is derived from
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"
(of a photographic lens or emulsion) causing a shortening of exposure time
"a fast lens"
is similar to
producing an effect
"poverty as a causative factor in crime"

adverbs

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"
firmly or closely
"held fast to the rope"; "her foot was stuck fast"; "held tight"