| fast | (adjective) acting or moving or capable of acting or moving quickly | - |
|---|
| (adjective) at a rapid tempo | - |
| (adjective) (used of timepieces) indicating a time ahead of or later than the correct time | - |
| (adjective) (of a photographic lens or emulsion) causing a shortening of exposure time | - |
| (adjective) unwavering in devotion to friend or vow or cause | Synonyms: firm, loyal, truehearted |
| (adjective) securely fixed in place | Synonyms: firm, immobile |
| (adjective) hurried and brief | Synonyms: flying, quick |
| (adjective) unrestrained by convention or morality | Synonyms: debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous |
| (adjective) resistant to destruction or fading | - |
| (adjective) (of surfaces) conducive to rapid speeds | - |
| (noun) abstaining from food | Synonyms: fasting |
| (adverb) quickly or rapidly (often used as a combining form) | - |
| (adverb) firmly or closely | Synonyms: tight |
| (verb) abstain from eating | - |
| (verb) abstain from certain foods, as for religious or medical reasons | - |
| fastball | (noun) (baseball) a pitch thrown with maximum velocity | Synonyms: bullet, heater, hummer, smoke |
|---|
| fasten | (verb) make tight or tighter | Synonyms: tighten |
|---|
| (verb) become fixed or fastened | - |
| (verb) cause to be firmly attached | Synonyms: fix, secure |
| (verb) attach to | - |
| fastened | (adjective) firmly closed or secured | - |
|---|
| (adjective) furnished or closed with buttons or something buttonlike | Synonyms: buttoned |
| (adjective) fastened with strings or cords | Synonyms: tied |
| fastener | (noun) restraint that attaches to something or holds something in place | Synonyms: fastening, fixing, holdfast |
|---|
| (noun) a person who fastens or makes fast | - |
| fastening | (noun) the act of fastening things together | Synonyms: attachment |
|---|
| (noun) restraint that attaches to something or holds something in place | Synonyms: fastener, fixing, holdfast |
| faster | (adverb) more quickly | Synonyms: quicker |
|---|
| fastest | (adverb) most quickly | Synonyms: quickest |
|---|
| fastidious | (adjective) giving careful attention to detail; hard to please; excessively concerned with cleanliness | - |
|---|
| (adjective) having complicated nutritional requirements; especially growing only in special artificial cultures | Synonyms: exacting |
| fastidiously | (adverb) in a fastidious manner | - |
|---|
| (adverb) in a fastidious and painstaking manner | Synonyms: painstakingly |
| fastidiousness | (noun) the trait of being meticulous about matters of taste or style | - |
|---|
| fastigiate | (adjective) having clusters of erect branches (often appearing to form a single column) | - |
|---|
| fasting | (noun) abstaining from food | Synonyms: fast |
|---|
| fastnacht | (noun) doughnut traditionally eaten on Shrove Tuesday | - |
|---|
| fastness | (noun) a strongly fortified defensive structure | Synonyms: stronghold |
|---|
| (noun) a rate (usually rapid) at which something happens | Synonyms: speed, swiftness |
| (noun) the quality of being fixed in place as by some firm attachment | Synonyms: fixedness, fixity, fixture, secureness |