fast

adj 1: 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" ant slow

2: (used of timepieces) indicating a time ahead of or later than the correct time; "my watch is fast" ant slow

3: at a rapid tempo; "the band played a fast fox trot" ant slow 4: (of surfaces) conducive to rapid speeds; "a fast road"; "grass courts are faster than clay"

5: firmly fastened or secured against opening; "windows and doors were all fast"; "a locked closet"; "left the house properly secured" syn barred, bolted, latched, locked, secured

6: resistant to destruction or fading; "fast colors" 7: unrestrained by convention or morality; "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women" syn debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous

8: hurried and brief; "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit" syn flying, quick

9: securely fixed in place; "the post was still firm after being hit by the car" syn firm, immobile

10: 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" syn firm, loyal, truehearted, fast(a)

n : abstaining from food syn fasting adv 1: 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"

2: firmly or tightly; "held fast to the rope"; "her foot was stuck fast"; "held tight" syn tight

v 1: abstain from certain foods, as for religious or medical reasons; "Catholics sometimes fast during Lent"

2: abstain from eating; "Before the medical exam, you must fast"

Source: WordNet. Princeton University