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say it: fast
fast is an adjective, verb, adverb and noun meaning "acting or moving or capable of acting or moving quickly". It carries 15 recorded senses.
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”
(used of timepieces) indicating a time ahead of or later than the correct time
“my watch is fast”
(of surfaces) conducive to rapid speeds
“a fast road”
“grass courts are faster than clay”
unrestrained by convention or morality
“Congreve draws a debauched aristocratic society”
“deplorably dissipated and degraded”
“riotous living”
“fast women”
unwavering in devotion to friend or vow or cause
“a firm ally”
“loyal supporters”
“the true-hearted soldier...of Tippecanoe”
“fast friends”
(of a photographic lens or emulsion) causing a shortening of exposure time
“a fast lens”
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”
abstaining from food
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fast come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.