Occurring or happening within a short time; brief.
Fixed; closely compressed.
Characterized by speed; acting or moving quickly.
To refrain from eating.
firmly fastened or secured against opening; "windows and doors were all fast"; "a locked closet"; "left the house properly secured"
unrestrained by convention or morality; "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
(used of persons) dependable in devotion or allegiance or affection; "a faithful old dog"; "a faithful friend"; "fast friends"; "a loyal companion"; "she proved a true friend"; "a lover absolutely true in act and word and thought"- H.O.Taylor
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"
(music) at a rapid tempo; "the band played a fast fox trot"
(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"
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"
abstain from eating; "Before the medical exam, you must fast"
abstain from certain foods, as for religious or medical reasons; "Catholics sometimes fast during Lent"
