Fast meaning

What does “fast” mean? Definitions, examples, synonyms and opposites.

“fast” is a noun, verb, adjective and adverb with 15 meanings. Its most common meaning is: abstaining from food.

fast

abstain from certain foods, as for religious or medical reasons
“Catholics sometimes fast during Lent”
abstain from eating
“Before the medical exam, you must fast”

acting or moving or capable of acting or moving quickly
“fast film”
“on the fast track in school”
Oppositesslow
(used of timepieces) indicating a time ahead of or later than the correct time
“my watch is fast”
Oppositesslow
at a rapid tempo
“the band played a fast fox trot”
Oppositesslow
(of surfaces) conducive to rapid speeds
“a fast road”
“grass courts are faster than clay”
resistant to destruction or fading
“fast colors”
unrestrained by convention or morality
“Congreve draws a debauched aristocratic society”
“deplorably dissipated and degraded”
Synonymsdebauched degenerate degraded dissipated dissolute libertine profligate riotous
hurried and brief
“paid a flying visit”
“took a flying glance at the book”
Synonymsflying quick
securely fixed in place
“the post was still firm after being hit by the car”
Synonymsfirm immobile
unwavering in devotion to friend or vow or cause
“a firm ally”
“loyal supporters”
Synonymsfirm loyal truehearted
(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”
firmly or closely
“held fast to the rope”
“her foot was stuck fast”
Synonymstight

Source: WordNet 3.1, Princeton University