fast

(noun) abstaining from food. Synonyms: fasting.

(verb) abstain from certain foods, as for religious or medical reasons. Example: "Catholics sometimes fast during lent."

(verb) abstain from eating. Example: "Before the medical exam, you must fast."

(adj) acting or moving or capable of acting or moving quickly. Synonyms: fast (vs. slow). Examples: "Fast film." "On the fast track in school." "Set a fast pace." "A fast car."

(adj) (used of timepieces) indicating a time ahead of or later than the correct time. Synonyms: fast (vs. slow). Example: "My watch is fast."

(adj) at a rapid tempo. Synonyms: fast (vs. slow). Example: "The band played a fast fox trot."

(adj) (of surfaces) conducive to rapid speeds. Examples: "A fast road." "Grass courts are faster than clay."

(adj) resistant to destruction or fading. Example: "Fast colors."

(adj) unrestrained by convention or morality. Synonyms: debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous. Examples: "Congreve draws a debauched aristocratic society." "Deplorably dissipated and degraded." "Riotous living." "Fast women."

(adj) hurried and brief. Synonyms: flying, quick. Examples: "Paid a flying visit." "Took a flying glance at the book." "A quick inspection." "A fast visit."

(adj) securely fixed in place. Synonyms: firm, immobile. Example: "The post was still firm after being hit by the car."

(adj) unwavering in devotion to friend or vow or cause. Synonyms: firm, loyal, truehearted, fast(prenominal). Examples: "A firm ally." "Loyal supporters." "The true-hearted soldier...of tippecanoe"- campaign song for william henry harrison." "Fast friends."

(adj) (of a photographic lens or emulsion) causing a shortening of exposure time. Example: "A fast lens."

(adv) quickly or rapidly (often used as a combining form). Examples: "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."

(adv) firmly or closely. Synonyms: tight. Examples: "Held fast to the rope." "Her foot was stuck fast." "Held tight."