| falciform | (adjective) curved like a sickle | Synonyms: falcate, sickle-shaped |
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| falconine | (adjective) relating to or resembling a falcon | - |
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| fallacious | (adjective) involving deception | Synonyms: deceitful, fraudulent |
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| (adjective) based on an incorrect or misleading notion or information | - |
| (adjective) containing or based on a fallacy | Synonyms: unsound |
| fallen | (adjective) killed in battle | - |
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| (adjective) having fallen in or collapsed | - |
| (adjective) having dropped by the force of gravity | - |
| (adjective) having lost your chastity | - |
| fallible | (adjective) likely to fail or make errors | - |
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| (adjective) wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings | Synonyms: frail, imperfect, weak |
| falling | (adjective) becoming lower or less in degree or value | - |
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| (adjective) decreasing in amount or degree | - |
| (adjective) coming down freely under the influence of gravity | Synonyms: dropping |
| fallow | (adjective) undeveloped but potentially useful | - |
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| (adjective) left unplowed and unseeded during a growing season | - |
| false | (adjective) not in accordance with the fact or reality or actuality | - |
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| (adjective) not genuine or real; being an imitation of the genuine article | Synonyms: fake, faux, imitation, simulated |
| (adjective) adopted in order to deceive | Synonyms: assumed, fictitious, fictive, pretended, put on, sham |
| (adjective) designed to deceive | - |
| (adjective) (used especially of persons) not dependable in devotion or affection; unfaithful | Synonyms: untrue |
| (adjective) arising from error | Synonyms: mistaken |
| (adjective) inaccurate in pitch | Synonyms: off-key, sour |
| (adjective) deliberately deceptive | - |
| (adjective) erroneous and usually accidental | - |
| (adjective) inappropriate to reality or facts | Synonyms: delusive |
| falsetto | (adjective) artificially high; above the normal voice range | - |
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| falsifiable | (adjective) capable of being tested (verified or falsified) by experiment or observation | Synonyms: confirmable, verifiable |
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| faltering | (adjective) unsteady in speech or action | - |
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| famed | (adjective) widely known and esteemed | Synonyms: celebrated, famous, far-famed, illustrious, notable, noted, renowned |
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| familial | (adjective) relating to or having the characteristics of a family | - |
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| (adjective) occurring among members of a family usually by heredity | Synonyms: genetic, hereditary, inherited, transmissible, transmitted |
| familiar | (adjective) well known or easily recognized | - |
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| (adjective) within normal everyday experience; common and ordinary; not strange | - |
| (adjective) having mutual interests or affections; of established friendship | Synonyms: intimate |
| (adjective) (usually followed by `with') well informed about or knowing thoroughly | Synonyms: conversant |
| familiarised | (adjective) having achieved a comfortable relation with your environment | Synonyms: adjusted, familiarized |
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| familiarising | (adjective) serving to make familiar | Synonyms: familiarizing |
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| familiarized | (adjective) having achieved a comfortable relation with your environment | Synonyms: adjusted, familiarised |
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| familiarizing | (adjective) serving to make familiar | Synonyms: familiarising |
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| famished | (adjective) extremely hungry | Synonyms: esurient, ravenous, sharp-set, starved |
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| famous | (adjective) widely known and esteemed | Synonyms: celebrated, famed, far-famed, illustrious, notable, noted, renowned |
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| fanatic | (adjective) marked by excessive enthusiasm for and intense devotion to a cause or idea | Synonyms: fanatical, overzealous, rabid |
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| fanatical | (adjective) marked by excessive enthusiasm for and intense devotion to a cause or idea | Synonyms: fanatic, overzealous, rabid |
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| fancied | (adjective) formed or conceived by the imagination | Synonyms: fabricated, fictional, fictitious |
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| fanciful | (adjective) indulging in or influenced by fancy | Synonyms: notional |
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| (adjective) having a curiously intricate quality | - |
| (adjective) not based on fact; existing only in the imagination | Synonyms: imaginary, notional |
| fancy | (adjective) not plain; decorative or ornamented | - |
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| fanged | (adjective) having fangs | - |
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| fanlike | (adjective) resembling a fan | - |
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| fanned | (adjective) especially spread in a fan shape | Synonyms: spread-out |
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| fantabulous | (adjective) very good; of the highest quality | Synonyms: excellent, first-class, mean, ripping, splendid |
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| fantastic | (adjective) extraordinarily good or great; used especially as intensifiers | Synonyms: grand, howling, marvellous, marvelous, phenomenal, rattling, terrific, tremendous, wonderful, wondrous |
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| (adjective) extravagantly fanciful in design, construction, appearance | - |
| (adjective) ludicrously odd | Synonyms: antic, fantastical, grotesque |
| (adjective) existing in fancy only | Synonyms: fantastical |
| (adjective) fanciful and unrealistic; foolish | Synonyms: wild |
| fantastical | (adjective) ludicrously odd | Synonyms: antic, fantastic, grotesque |
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| (adjective) existing in fancy only | Synonyms: fantastic |
| far | (adjective) located at a great distance in time or space or degree | - |
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| (adjective) beyond a norm in opinion or actions | - |
| (adjective) being of a considerable distance or length | - |
| (adjective) being the animal or vehicle on the right or being on the right side of an animal or vehicle | - |
| faraway | (adjective) far removed mentally | - |
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| (adjective) very far away in space or time | Synonyms: far-off |
| farcical | (adjective) broadly or extravagantly humorous; resembling farce | Synonyms: ludicrous, ridiculous |
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| farfetched | (adjective) (of an idea or story) so exaggerated or ludicrous as to be improbable | Synonyms: far-fetched |
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| (adjective) (of a theory or explanation) highly imaginative but unlikely and unconvincing | Synonyms: far-fetched |
| farinaceous | (adjective) composed of or covered with particles resembling meal in texture or consistency | Synonyms: coarse-grained, grainy, granular, granulose, gritty, mealy |
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| (adjective) resembling starch | Synonyms: amylaceous, amyloid, amyloidal, starchlike |
| farming | (adjective) relating to farming or agriculture | Synonyms: agrarian, agricultural |
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| farseeing | (adjective) capable of seeing to a great distance | Synonyms: eagle-eyed, keen-sighted, longsighted |
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| (adjective) planning prudently for the future | Synonyms: farsighted, foresighted, foresightful, long, longsighted, prospicient |
| farsighted | (adjective) able to see distant objects clearly | Synonyms: presbyopic |
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| (adjective) planning prudently for the future | Synonyms: farseeing, foresighted, foresightful, long, longsighted, prospicient |
| farther | (adjective) more distant in especially space or time | - |
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| (adjective) more distant in especially degree | Synonyms: further |
| farthermost | (adjective) (comparatives of `far') most remote in space or time or order | Synonyms: farthest, furthermost, furthest, utmost, uttermost |
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| farthest | (adjective) (comparatives of `far') most remote in space or time or order | Synonyms: farthermost, furthermost, furthest, utmost, uttermost |
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| fascinated | (adjective) having your attention fixated as though by a spell | Synonyms: hypnotised, hypnotized, mesmerised, mesmerized, spell-bound, spellbound, transfixed |
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| fascinating | (adjective) capturing interest as if by a spell | Synonyms: bewitching, captivating, enchanting, enthralling, entrancing |
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| (adjective) capable of arousing and holding the attention | Synonyms: absorbing, engrossing, gripping, riveting |
| fascist | (adjective) relating to or characteristic of fascism | Synonyms: fascistic |
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| fascistic | (adjective) relating to or characteristic of fascism | Synonyms: fascist |
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| fashionable | (adjective) being or in accordance with current social fashions | Synonyms: stylish |
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| (adjective) having elegance or taste or refinement in manners or dress | Synonyms: stylish |
| (adjective) popular and considered appealing or fashionable at the time | Synonyms: in fashion |
| fashioned | (adjective) planned and made or fashioned artistically | - |
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| fast | (adjective) acting or moving or capable of acting or moving quickly | - |
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| (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 | - |
| fastened | (adjective) firmly closed or secured | - |
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| (adjective) furnished or closed with buttons or something buttonlike | Synonyms: buttoned |
| (adjective) fastened with strings or cords | Synonyms: tied |
| fastidious | (adjective) giving careful attention to detail; hard to please; excessively concerned with cleanliness | - |
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| (adjective) having complicated nutritional requirements; especially growing only in special artificial cultures | Synonyms: exacting |
| fastigiate | (adjective) having clusters of erect branches (often appearing to form a single column) | - |
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| fat | (adjective) having an (over)abundance of flesh | - |
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| (adjective) containing or composed of fat | Synonyms: fatty |
| (adjective) marked by great fruitfulness | Synonyms: fertile, productive, rich |
| (adjective) lucrative | Synonyms: juicy |
| (adjective) having a relatively large diameter | - |
| fatal | (adjective) bringing death | - |
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| (adjective) having momentous consequences; of decisive importance | Synonyms: fateful |
| (adjective) controlled or decreed by fate; predetermined | Synonyms: fateful |
| (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: black, calamitous, disastrous, fateful |
| fatalist | (adjective) of or relating to fatalism | Synonyms: fatalistic |
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| fatalistic | (adjective) of or relating to fatalism | Synonyms: fatalist |
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| fated | (adjective) (usually followed by `to') determined by tragic fate | Synonyms: doomed |
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| fateful | (adjective) having momentous consequences; of decisive importance | Synonyms: fatal |
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| (adjective) controlled or decreed by fate; predetermined | Synonyms: fatal |
| (adjective) ominously prophetic | Synonyms: foreboding, portentous |
| (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: black, calamitous, disastrous, fatal |
| fatheaded | (adjective) (used informally) stupid | Synonyms: blockheaded, boneheaded, duncical, duncish, loggerheaded, thick-skulled, thick, thickheaded, wooden-headed |
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| fatherless | (adjective) not having a known or legally responsible father | - |
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| (adjective) having no living father | - |
| fatherlike | (adjective) like or befitting a father or fatherhood; kind and protective | Synonyms: fatherly |
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| fatherly | (adjective) like or befitting a father or fatherhood; kind and protective | Synonyms: fatherlike |
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| fathomable | (adjective) (of depth) capable of being sounded or measured for depth | Synonyms: plumbable, soundable |
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| (adjective) (of meaning) capable of being penetrated or comprehended | - |
| fatigued | (adjective) drained of energy or effectiveness; extremely tired; completely exhausted | Synonyms: dog-tired, exhausted, fagged, gone, played out, spent, washed-out, worn-out, worn out |
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| fatless | (adjective) without fat or fat solids | Synonyms: fat-free, nonfat |
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| fattened | (adjective) (of market animals) made ready for market | - |
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| fattening | (adjective) subject to or used in the process of finishing or fattening up for slaughter | - |
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| fattish | (adjective) somewhat fat | - |
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| fatty | (adjective) containing or composed of fat | Synonyms: fat |
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| fatuous | (adjective) extremely silly or stupid | Synonyms: asinine, inane |
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| faucal | (adjective) of or relating to the fauces | - |
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| faultfinding | (adjective) tending to find and call attention to faults | Synonyms: captious |
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| (adjective) tending to make moral judgments or judgments based on personal opinions | - |
| faultless | (adjective) without fault or error | Synonyms: immaculate, impeccable, incorrupted |
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| faulty | (adjective) having a defect | Synonyms: defective |
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| (adjective) characterized by errors; not agreeing with a model or not following established rules | Synonyms: incorrect, wrong |
| faux | (adjective) not genuine or real; being an imitation of the genuine article | Synonyms: fake, false, imitation, simulated |
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| faveolate | (adjective) pitted with cell-like cavities (as a honeycomb) | Synonyms: alveolate, cavitied, honeycombed, pitted |
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| favorable | (adjective) (of winds or weather) tending to promote or facilitate | Synonyms: favourable |
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| (adjective) encouraging or approving or pleasing | Synonyms: favourable |
| (adjective) giving an advantage | Synonyms: advantageous, favourable |
| (adjective) presaging or likely to bring good luck or a good outcome | Synonyms: favourable, golden, lucky, prosperous |
| favored | (adjective) preferred above all others and treated with partiality | Synonyms: best-loved, favorite, favoured, favourite, pet, preferent, preferred |
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| favorite | (adjective) preferred above all others and treated with partiality | Synonyms: best-loved, favored, favoured, favourite, pet, preferent, preferred |
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| (adjective) appealing to the general public | Synonyms: favourite |
| favourable | (adjective) (of winds or weather) tending to promote or facilitate | Synonyms: favorable |
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| (adjective) encouraging or approving or pleasing | Synonyms: favorable |
| (adjective) giving an advantage | Synonyms: advantageous, favorable |
| (adjective) presaging or likely to bring good luck or a good outcome | Synonyms: favorable, golden, lucky, prosperous |
| favoured | (adjective) preferred above all others and treated with partiality | Synonyms: best-loved, favored, favorite, favourite, pet, preferent, preferred |
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| favourite | (adjective) preferred above all others and treated with partiality | Synonyms: best-loved, favored, favorite, favoured, pet, preferent, preferred |
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| (adjective) appealing to the general public | Synonyms: favorite |
| fawning | (adjective) attempting to win favor from influential people by flattery | Synonyms: bootlicking, obsequious, sycophantic, toadyish |
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| (adjective) attempting to win favor by flattery | Synonyms: bootlicking, sycophantic, toadyish |
| fazed | (adjective) caused to show discomposure | Synonyms: bothered, daunted |
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| fearful | (adjective) lacking courage; ignobly timid and faint-hearted | Synonyms: cowardly |
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| (adjective) experiencing or showing fear | - |
| (adjective) causing fear or dread or terror | Synonyms: awful, dire, direful, dread, dreaded, dreadful, fearsome, frightening, horrendous, horrific, terrible |
| (adjective) extremely distressing | Synonyms: frightful |
| (adjective) timid by nature or revealing timidity | Synonyms: timorous, trepid |
| fearless | (adjective) oblivious of dangers or perils or calmly resolute in facing them | Synonyms: unafraid |
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| (adjective) invulnerable to fear or intimidation | Synonyms: audacious, brave, dauntless, hardy, intrepid, unfearing |
| fearsome | (adjective) causing fear or dread or terror | Synonyms: awful, dire, direful, dread, dreaded, dreadful, fearful, frightening, horrendous, horrific, terrible |
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| feasible | (adjective) capable of being done with means at hand and circumstances as they are | Synonyms: executable, practicable, viable, workable |
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| featherbrained | (adjective) lacking seriousness; given to frivolity | Synonyms: airheaded, dizzy, empty-headed, giddy, light-headed, lightheaded, silly |
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| feathered | (adjective) having or covered with feathers | - |
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| (adjective) adorned with feathers or plumes | Synonyms: feathery, plumy |
| featheredged | (adjective) having a rough edge; used of handmade paper or paper resembling handmade | Synonyms: deckle-edged, deckled |
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| featherless | (adjective) having no feathers | Synonyms: unfeathered |
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| featherlike | (adjective) resembling or suggesting a feather or feathers | Synonyms: feathery |
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| feathery | (adjective) adorned with feathers or plumes | Synonyms: feathered, plumy |
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| (adjective) characterized by a covering of feathers | - |
| (adjective) resembling or suggesting a feather or feathers | Synonyms: featherlike |
| featured | (adjective) made a feature or highlight; given prominence | - |
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| (adjective) having facial features as specified; usually used in combination | - |
| featureless | (adjective) lacking distinguishing characteristics or features | - |
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| febrile | (adjective) of or relating to or characterized by fever | Synonyms: feverish |
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| fecal | (adjective) of or relating to feces | Synonyms: faecal |
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| feckless | (adjective) generally incompetent and ineffectual | Synonyms: inept |
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| (adjective) not fit to assume responsibility | - |
| feculent | (adjective) foul with waste matter | - |
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