12-letter words containing F
Embark on an exploration of 12-letter words that contain the letter F. This segment uncovers the diverse range of words that incorporate F within this specific length, revealing the versatility and richness of language. Ideal for vocabulary enthusiasts and word-game aficionados.
| Word | Points | Definition | Sentence example |
|---|---|---|---|
| motherfucker | 26 | insulting terms of address for people who are stupid or irritating or ridiculous | - |
| professional | 17 | a person engaged in one of the learned professions | - |
| specifically | 24 | in distinction from others | a program specifically for teenagers |
| satisfaction | 17 | state of being gratified or satisfied | - |
| confidential | 18 | (of information) given in confidence or in secret | this arrangement must be kept confidential |
| refrigerator | 16 | white goods in which food can be stored at low temperatures | - |
| difficulties | 21 | - | - |
| confirmation | 19 | making something valid by formally ratifying or confirming it | confirmation of the appointment |
| successfully | 22 | with success; in a successful manner | she performed the surgery successfully |
| handkerchief | 28 | a square piece of cloth used for wiping the eyes or nose or as a costume accessory | - |
| interference | 17 | the act of hindering or obstructing or impeding | - |
| significance | 20 | a meaning that is not expressly stated but can be inferred | the significance of his remark became clear only later |
| unidentified | 17 | being or having an unknown or unnamed source | - |
| affectionate | 20 | having or displaying warmth or affection | affectionate children |
| transferring | 16 | - | - |
| disqualified | 26 | barred from competition for violation of rules | a disqualified player |
| manufactured | 20 | produced in a large-scale industrial operation | - |
| unforgivable | 21 | not excusable | - |
| manufacturer | 19 | someone who manufactures something | - |
| indefinitely | 19 | to an indefinite extent; for an indefinite time | this could go on indefinitely |
| respectfully | 22 | in a respectful manner | might I respectfully suggest to the Town Council that they should adopt a policy of masterly inactivity? |
| sufficiently | 23 | to a sufficient degree | she was sufficiently fluent in Mandarin |
| satisfactory | 20 | meeting requirements | the step makes a satisfactory seat |
| indifference | 21 | the trait of lacking enthusiasm for or interest in things generally | - |
| unsuccessful | 19 | failing to accomplish an intended result | - |
| insufficient | 20 | of a quantity not able to fulfill a need or requirement | insufficient funds |
| confessional | 17 | a booth where a priest sits to hear confessions | - |
| dissatisfied | 17 | in a state of sulky dissatisfaction | - |
| definitively | 22 | - | - |
| inflammation | 19 | the state of being emotionally aroused and worked up | he tried to calm those who were in a state of extreme inflammation |
| unofficially | 23 | without official authorization | - |
| disinfectant | 18 | preventing infection by inhibiting the growth or action of microorganisms | - |
| purification | 19 | the process of removing impurities (as from oil or metals or sugar etc.) | - |
| notification | 17 | a request for payment | the notification stated the grace period and the penalties for defaulting |
| artificially | 20 | not according to nature; not by natural means | artificially induced conditions |
| modification | 20 | the act of making something different (as e.g. the size of a garment) | - |
| verification | 20 | additional proof that something that was believed (some fact or hypothesis or theory) is correct | - |
| infiltration | 15 | the slow passage of a liquid through a filtering medium | the infiltration of seawater through the lava |
| formaldehyde | 25 | a colorless poisonous gas; made by the oxidation of methanol | - |
| differential | 19 | a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | - |
| transference | 17 | transferring ownership | - |
| fundamentals | 18 | principles from which other truths can be derived | first you must learn the fundamentals |
| magnificence | 22 | splendid or imposing in size or appearance | - |
| imperfection | 21 | the state or an instance of being imperfect | - |
| insufferable | 20 | too extreme to bear | the insufferable heat of August in a New York apartment with no air conditioning |
| inflammatory | 22 | arousing to action or rebellion | - |
| figuratively | 22 | in a figurative sense | figuratively speaking,... |
| flamethrower | 23 | a weapon that squirts ignited fuel for several yards | - |
| unfathomable | 22 | resembling an abyss in depth; so deep as to be unmeasurable | - |
| bullfighting | 22 | the activity at a bullfight | - |
| delightfully | 23 | in a delightful manner | the farm house, though in itself a small one, is delightfully situated |
| faithfulness | 21 | the quality of being faithful | - |
| infringement | 18 | a crime less serious than a felony | - |
| infiltrating | 16 | - | - |
| selflessness | 15 | acting with less concern for yourself than for the success of the joint activity | - |
| refrigerated | 17 | made or kept cold by refrigeration | keep the milk refrigerated |
| fraternizing | 25 | - | - |
| effortlessly | 21 | without effort or apparent effort | she danced gracefully and effortlessly |
| confiscating | 20 | - | - |
| fiddlesticks | 23 | - | - |
| fearlessness | 15 | feeling no fear | - |
| understaffed | 20 | inadequate in number of workers or assistants etc. | overcrowded and understaffed hospitals |
| identifiable | 18 | capable of being identified | - |
| electrifying | 21 | causing a surge of emotion or excitement | she gave an electrifying performance |
| fermentation | 17 | a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | - |
| gratefulness | 16 | warm friendly feelings of gratitude | - |
| effervescent | 23 | used of wines and waters; charged naturally or artificially with carbon dioxide | - |
| unsatisfying | 19 | not up to expectations | - |
| refreshingly | 22 | in a manner that relieves fatigue and restores vitality | the air was refreshingly cool |
| purposefully | 22 | in a purposeful manner | he caught the motorcycles in the full glare of his headlights, braked and slipped purposefully out of the car |
| fibrillation | 17 | act or process of forming fibrils | - |
| friendliness | 16 | a feeling of liking for another person; enjoyment in their company | - |
| frankincense | 21 | an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation | - |
| confectioner | 19 | someone who makes candies and other sweets | - |
| confiscation | 19 | seizure by the government | - |
| terrifically | 20 | (used as an intensifier) extremely well | - |
| truthfulness | 18 | the quality of being truthful | - |
| unscientific | 19 | not consistent with the methods or principles of science | an unscientific lack of objectivity |
| preferential | 17 | manifesting partiality | preferential tariff rates |
| flagellation | 16 | beating with a whip or strap or rope as a form of punishment | - |
| facilitating | 18 | - | - |
| indefensible | 18 | (of theories etc) incapable of being defended or justified | - |
| inefficiency | 25 | unskillfulness resulting from a lack of efficiency | - |
| disinfection | 18 | treatment to destroy harmful microorganisms | - |
| declassified | 19 | having had security classification removed | - |
| thoughtfully | 25 | in a thoughtful manner | he stared thoughtfully out the window |
| unprofitable | 19 | producing little or no profit or gain | deposits abandoned by mining companies as unprofitable |
| youthfulness | 21 | the freshness and vitality characteristic of a young person | - |
| pacification | 21 | the act of appeasing someone or causing someone to be more favorably inclined | a wonderful skill in the pacification of crying infants |
| liquefaction | 26 | the conversion of a solid or a gas into a liquid | - |
| cheerfulness | 20 | a feeling of spontaneous good spirits | his cheerfulness made everyone feel better |
| putrefaction | 19 | a state of decay usually accompanied by an offensive odor | - |
| forensically | 20 | - | - |
| terrifyingly | 22 | - | - |
| unflattering | 16 | showing or representing unfavorably | an unflattering portrait |
| familiarized | 27 | having achieved a comfortable relation with your environment | - |
| cockfighting | 28 | participation in the sport of matching gamecocks in a cockfight | - |
| peacefulness | 19 | a state that is calm and tranquil | - |
| malformation | 19 | an affliction in which some part of the body is misshapen or malformed | - |
| coffeehouses | 23 | - | - |
| afterthought | 22 | thinking again about a choice previously made | - |
| undersheriff | 22 | - | - |
| gracefulness | 18 | beautiful carriage | - |
| infrequently | 27 | not many times | in your 1850 church you not infrequently find a dramatic contrast between the sumptuous appointments of the building itself and the inhuman barrack-like living conditions in the church room |
| counteroffer | 20 | an offer made by someone who has rejected a prior offer | - |
| antiaircraft | 17 | artillery designed to shoot upward at airplanes | - |
| thoroughfare | 22 | a public road from one place to another | - |
| transferable | 17 | capable of being moved or conveyed from one place to another | - |
| quantifiable | 26 | capable of being quantified | - |
| fireproofing | 21 | - | - |
| folliculitis | 17 | inflammation of a hair follicle | - |
| intensifying | 19 | increasing in strength or intensity | - |
| discomfiture | 20 | anxious embarrassment | - |
| shuffleboard | 24 | a game in which players use long sticks to shove wooden disks onto the scoring area marked on a smooth surface | - |
| unfavourable | 20 | involving or creating circumstances detrimental to success or effectiveness | - |
| prizefighter | 30 | a professional boxer | - |
| fluorescence | 19 | light emitted during absorption of radiation of some other (invisible) wavelength | - |
| felicitating | 18 | - | - |
| fountainhead | 19 | an abundant source | - |
| effeminately | 23 | - | - |
| camouflaging | 21 | - | - |
| chesterfield | 21 | suave and witty English statesman remembered mostly for letters to his son (1694-1773) | - |
| defibrillate | 18 | stop the fibrillation and restore normal contractions, usually by means of electric shocks | The patient's heart had to be defibrillated to save his life |
| aforethought | 22 | with planning and intention | with malice aforethought |
| weightlifter | 22 | an athlete who lifts barbells | - |
| monofilament | 19 | - | - |
| professorial | 17 | relating to or characteristic of professors | professorial demeanor |
| fainthearted | 19 | lacking conviction or boldness or courage | - |
| felicitation | 17 | (usually plural) an expression of pleasure at the success or good fortune of another | - |
| featherbrain | 20 | - | - |
| freestanding | 17 | standing apart; not attached to or supported by anything | a freestanding bell tower |
| foundational | 16 | - | - |
| horrifically | 23 | - | - |
| inflationary | 18 | associated with or tending to cause increases in inflation | inflationary prices |
| diversifying | 23 | - | - |
| reflectively | 23 | in a reflective manner | he watched her reflectively |
| thousandfold | 20 | - | - |
| thankfulness | 22 | warm friendly feelings of gratitude | - |
| unclassified | 18 | not arranged in any specific grouping | - |
| quarterfinal | 24 | one of the four competitions in an elimination tournament whose winners go on to play in the semifinals | - |
| flamboyantly | 25 | in a fancy colorful manner | he dresses rather flamboyantly |
| fraudulently | 19 | in a dishonest and fraudulent manner | this money was fraudulently obtained |
| functionally | 20 | with respect to function | the two units are functionally interdependent |
| gemeinschaft | 23 | - | - |
| hydrofluoric | 24 | - | - |
| benefactress | 19 | a woman benefactor | - |
| spitefulness | 17 | malevolence by virtue of being malicious or spiteful or nasty | - |
| unaffiliated | 19 | not affiliated | - |
| unthoughtful | 22 | not exhibiting or characterized by careful thought | - |
| oversimplify | 25 | make too simple | Don't oversimplify the instructions |
| undefeatable | 18 | - | - |
| factionalism | 19 | - | - |
| facilitation | 17 | act of assisting or making easier the progress or improvement of something | - |
| fruitfulness | 18 | the intellectual productivity of a creative imagination | - |
| fluorocarbon | 19 | a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols | - |
| fortuitously | 18 | by good fortune | - |
| infotainment | 17 | a film or TV program presenting the facts about a person or event | - |
| insufferably | 23 | to an insufferable degree | it was insufferably hot in the room |
| shatterproof | 20 | resistant to shattering or splintering | shatterproof automobile windows |
| ratification | 17 | making something valid by formally ratifying or confirming it | the ratification of the treaty |
| unfertilized | 25 | not having been fertilized | an unfertilized egg |
| vengefulness | 19 | a malevolent desire for revenge | - |
| ossification | 17 | hardened conventionality | - |
| meaningfully | 21 | in a meaningful manner; so as to be meaningful | He glanced at her meaningfully |
| unforgivably | 24 | in an unpardonable manner or to an unpardonable degree | - |
| enfranchised | 21 | endowed with the rights of citizenship especially the right to vote | - |
| familiarised | 18 | having achieved a comfortable relation with your environment | - |
| fabulousness | 17 | - | - |
| feebleminded | 21 | retarded in intellectual development | - |
| federalizing | 26 | - | - |
| fastidiously | 19 | in a fastidious and painstaking manner | - |
| frontispiece | 19 | an ornamental facade | - |
| fraternising | 16 | - | - |
| freewheeling | 22 | cheerfully irresponsible | freewheeling urban youths |
| frictionless | 17 | lacking all friction | a perpetual motion machine would have to be frictionless |
| henceforward | 24 | from this time forth; from now on | - |
| horrifyingly | 25 | in a horrifying manner | he laughed horrifyingly |
| infiniteness | 15 | the quality of being infinite; without bound or limit | - |
| indefensibly | 21 | - | - |
| carefreeness | 17 | the cheerful feeling you have when nothing is troubling you | - |
| conformation | 19 | any spatial attributes (especially as defined by outline) | - |
| reflectivity | 23 | the capability of quiet thought or contemplation | - |
| schoolfellow | 23 | an acquaintance that you go to school with | - |
| semiofficial | 22 | having some official authority or sanction | - |
| transmogrify | 21 | change completely the nature or appearance of | - |
| transpacific | 21 | - | - |
| uneventfully | 21 | in an uneventful manner | the space shuttle landed uneventfully |
| unlawfulness | 18 | the quality of failing to conform to law | - |
| unsanctified | 18 | not holy because unconsecrated or impure or defiled | - |
| unmercifully | 22 | without pity; in a merciless manner | - |
| weatherproof | 23 | able to withstand exposure to weather without damage | weatherproof electric wiring |
| overinflated | 19 | - | - |
| personifying | 21 | - | - |
| leapfrogging | 20 | - | - |
| unfulfilling | 19 | - | - |
| epileptiform | 21 | - | - |
| equisetiform | 26 | - | - |
| enfeeblement | 19 | serious weakening and loss of energy | - |
| enfeoffments | 23 | - | - |
| enforcements | 19 | - | - |
| enframements | 19 | - | - |
| enfranchiser | 20 | - | - |
| enfranchises | 20 | - | - |
| entomofaunae | 17 | - | - |
| entomofaunas | 17 | - | - |
| enfreedoming | 19 | - | - |
| engraftation | 16 | - | - |
| engraftments | 18 | - | - |
| exemplifiers | 26 | - | - |
| exemplifying | 30 | clarifying by use of examples | - |
| exfoliations | 22 | - | - |
| exsufflating | 26 | - | - |
| exsufflation | 25 | - | - |
| exsufflicate | 27 | - | - |
| eventfulness | 18 | - | - |
| filialnesses | 15 | - | - |
| financiering | 18 | - | - |
| fineableness | 17 | - | - |
| fingerboards | 19 | - | - |
| fingerguards | 18 | - | - |
| fingerpicked | 25 | - | - |
| fingerplates | 18 | - | - |
| fingerprints | 18 | - | - |
| fingerstalls | 16 | - | - |
| financialist | 17 | - | - |
| finalization | 24 | the act of finalizing | - |
| filibustered | 18 | - | - |
| filibusterer | 17 | a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes | - |
| fillagreeing | 17 | - | - |
| filmsettings | 18 | - | - |
| filthinesses | 18 | - | - |
| filtrability | 20 | - | - |
| fimbriations | 19 | - | - |
| finalisation | 15 | the act of finalizing | - |
| finicalities | 17 | - | - |
| finicketiest | 21 | - | - |
| finitenesses | 15 | - | - |
| fissirostral | 15 | - | - |
| fitfulnesses | 18 | - | - |
| flabbergasts | 20 | - | - |
| flabbinesses | 19 | - | - |
| flabellation | 17 | - | - |
| flabelliform | 22 | - | - |
| flaccidities | 20 | - | - |
| flagellating | 17 | - | - |
| fissiparisms | 19 | - | - |
| fissipalmate | 19 | - | - |
| firecrackers | 23 | - | - |
| firefighters | 22 | - | - |
| firefighting | 23 | - | - |
| firelighters | 19 | - | - |
| fissicostate | 17 | - | - |
| fissilingual | 16 | - | - |
| fissionables | 17 | - | - |
| fervidnesses | 19 | - | - |
| fiberisation | 17 | - | - |
| fiberization | 26 | - | - |
| fibreglasses | 18 | - | - |
| fibrillating | 18 | - | - |
| fibrilliform | 22 | - | - |
| fibrinogenic | 20 | - | - |
| fibrinolyses | 20 | - | - |
| fiberglasses | 18 | - | - |
| fiberglassed | 19 | - | - |
| festinations | 15 | - | - |
| festivalgoer | 19 | - | - |
| festooneries | 15 | - | - |
| festschrifts | 23 | - | - |
| fetoproteins | 17 | - | - |
| feverishness | 21 | a rise in the temperature of the body; frequently a symptom of infection | - |
| fianchettoed | 21 | - | - |
| fianchettoes | 20 | - | - |
| fibrinolysin | 20 | an enzyme that dissolves the fibrin of blood clots | - |
| fibrinolysis | 20 | a normal ongoing process that dissolves fibrin and results in the removal of small blood clots | drugs causing fibrinolysis have been utilized therapeutically |
| fibrinolytic | 22 | - | - |
| fictionising | 18 | - | - |
| fictionizing | 27 | - | - |
| fictitiously | 20 | in a false manner intended to mislead | - |
| fiddledeedee | 19 | - | - |
| fieldworkers | 23 | - | - |
| fiendishness | 19 | - | - |
| fiercenesses | 17 | - | - |
| fictionalize | 26 | make into fiction | The writer fictionalized the lives of his parents in his latest novel |
| fictionality | 20 | - | - |
| fibroblastic | 21 | - | - |
| fibrocements | 21 | - | - |
| fibromyalgia | 23 | - | - |
| fibronectins | 19 | - | - |
| fibrosarcoma | 21 | - | - |
| fibrositises | 17 | - | - |
| ficklenesses | 21 | - | - |
| fictionalise | 17 | make into fiction | - |
| figurability | 21 | - | - |
| flickertails | 21 | - | - |
| flocculation | 19 | the process of flocculating; forming woolly cloudlike aggregations | - |
| flocculators | 19 | - | - |
| flocculences | 21 | - | - |
| flocculently | 22 | - | - |
| floodlighted | 21 | illuminated by means of floodlights | - |
| floorwalkers | 22 | - | - |
| floppinesses | 19 | - | - |
| florescences | 19 | - | - |
| flocculating | 20 | - | - |
| floatability | 20 | - | - |
| flimflammers | 24 | - | - |
| flimflammery | 27 | - | - |
| flimflamming | 25 | - | - |
| flimsinesses | 17 | - | - |
| flintinesses | 15 | - | - |
| flipflopping | 25 | - | - |
| flippantness | 19 | - | - |
| flittermouse | 17 | - | - |
| floriculture | 17 | the cultivation of flowering plants | - |
| floridnesses | 16 | - | - |
| flowcharting | 24 | - | - |
| fluorescents | 17 | - | - |
| fluoridating | 17 | - | - |
| fluoridation | 16 | the addition of a fluoride to the water supply (to prevent dental decay) | - |
| fluoridising | 17 | - | - |
| fluoridizing | 26 | - | - |
| fluorimeters | 17 | - | - |
| fluorimetric | 19 | - | - |
| fluoresceins | 17 | - | - |
| fluoresceine | 17 | a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) | - |
| fluctuations | 17 | - | - |
| fluegelhorns | 19 | - | - |
| fluentnesses | 15 | - | - |
| fluffinesses | 21 | - | - |
| fluidextract | 25 | - | - |
| fluidisation | 16 | - | - |
| fluidization | 25 | - | - |
| fluorapatite | 17 | a form of apatite in which fluorine predominates over chlorine | - |
| fluorinating | 16 | - | - |
| flickeringly | 25 | - | - |
| flagellators | 16 | - | - |
| flameproofer | 22 | - | - |
| flammability | 24 | the quality of being easily ignited and burning rapidly | - |
| flammiferous | 22 | - | - |
| flammulation | 19 | - | - |
| flannelboard | 18 | - | - |
| flannelettes | 15 | - | - |
| flannelgraph | 21 | - | - |
| flameproofed | 23 | - | - |
| flagellatory | 19 | - | - |
| flagelliform | 21 | - | - |
| flagginesses | 17 | - | - |
| flagitations | 16 | - | - |
| flagitiously | 19 | - | - |
| flagrantness | 16 | - | - |
| flamboyances | 24 | - | - |
| flamboyantes | 22 | - | - |
| flapperhoods | 23 | - | - |
| flashbacking | 27 | - | - |
| flashforward | 25 | - | - |
| flectionless | 17 | - | - |
| fleecinesses | 17 | - | - |
| fleetingness | 16 | the property of lasting for a very short time | - |
| fleshinesses | 18 | - | - |
| fleshmongers | 21 | - | - |
| flexecutives | 27 | - | - |
| flexibleness | 24 | the quality of being adaptable or variable | - |
| flexitarians | 22 | - | - |
| flawlessness | 18 | the state of being without a flaw or defect | - |
| flavourfully | 24 | - | - |
| flashinesses | 18 | - | - |
| flashmobbing | 25 | - | - |
| flatteringly | 19 | - | - |
| flatterously | 18 | - | - |
| flatulencies | 17 | - | - |
| flaughtering | 20 | - | - |
| flaviviruses | 21 | - | - |
| flavoprotein | 20 | - | - |
| flexographic | 30 | - | - |
| fertilizable | 26 | capable of being fertilized | - |
| facsimilists | 19 | - | - |
| fairnitickle | 21 | - | - |
| fairniticles | 17 | - | - |
| fairnytickle | 24 | - | - |
| fairnyticles | 20 | - | - |
| fairyflosses | 21 | - | - |
| faldistories | 16 | - | - |
| fallaciously | 20 | - | - |
| faintishness | 18 | - | - |
| factionalist | 17 | - | - |
| factionaries | 17 | - | - |
| factiousness | 17 | - | - |
| factitiously | 20 | - | - |
| factualistic | 19 | - | - |
| factualities | 17 | - | - |
| faineantises | 15 | - | - |
| fallibilisms | 19 | - | - |
| fallibilists | 17 | - | - |
| fallibleness | 17 | - | - |
| fanaticizing | 27 | - | - |
| fancifulness | 20 | - | - |
| fanfaronaded | 20 | - | - |
| fanfaronades | 19 | - | - |
| fantasticate | 17 | - | - |
| fantasticism | 19 | - | - |
| fantasticoes | 17 | - | - |
| fantasylands | 19 | - | - |
| fanaticising | 18 | - | - |
| famousnesses | 17 | - | - |
| fallownesses | 18 | - | - |
| familiariser | 17 | - | - |
| familiarises | 17 | - | - |
| familiarizer | 26 | - | - |
| familiarizes | 26 | - | - |
| familiarness | 17 | - | - |
| faradisation | 16 | - | - |
| facsimileing | 20 | - | - |
| fabulosities | 17 | - | - |
| facelessness | 17 | - | - |
| facilenesses | 17 | - | - |
| facilitative | 20 | freeing from difficulty or impediment | facilitative changes in the economic structure |
| facilitators | 17 | - | - |
| fabrications | 19 | - | - |
| facilitatory | 20 | inducing or aiding in facilitating neural activity | - |
| federatively | 22 | - | - |
| felicitously | 20 | in a felicitous manner | a not felicitously chosen word |
| felinenesses | 15 | - | - |
| fellmongered | 19 | - | - |
| fellowshiped | 24 | - | - |
| felspathoids | 21 | - | - |
| femalenesses | 17 | - | - |
| feminalities | 17 | - | - |
| feminilities | 17 | - | - |
| felicitators | 17 | - | - |
| feeblenesses | 17 | - | - |
| feedingstuff | 23 | - | - |
| feedthroughs | 23 | - | - |
| feistinesses | 15 | - | - |
| feldspathoid | 22 | - | - |
| feldspathose | 21 | - | - |
| feminineness | 17 | the properties characteristic of the female sex | - |
| femininities | 17 | - | - |
| feminisation | 17 | the process of becoming feminized; the development of female characteristics (loss of facial hair or breast enlargement) in a male because of hormonal disorders or castration | - |
| ferrochromes | 22 | - | - |
| ferrocyanide | 21 | salt of ferrocyanic acid usually obtained by a reaction of a cyanide with iron sulphate | - |
| ferromagnets | 18 | - | - |
| ferronickels | 21 | - | - |
| ferronnieres | 15 | - | - |
| ferrosilicon | 17 | - | - |
| ferrugineous | 16 | - | - |
| fertigations | 16 | - | - |
| ferrimagnets | 18 | - | - |
| ferricyanide | 21 | salt of ferricyanic acid obtained by oxidation of a ferrocyanide | - |
| feminization | 26 | the process of becoming feminized; the development of female characteristics (loss of facial hair or breast enlargement) in a male because of hormonal disorders or castration | - |
| femtoseconds | 20 | - | - |
| fenestration | 15 | surgical procedure that creates a new fenestra to the cochlea in order to restore hearing lost because of osteosclerosis | - |
| fennelflower | 21 | - | - |
| fermentative | 20 | - | - |
| fernitickles | 21 | - | - |
| fernytickles | 24 | - | - |
| fertilisable | 17 | - | - |
| faradization | 25 | - | - |
| fascioliases | 17 | - | - |
| fascioliasis | 17 | infestation with the liver fluke Fasciola hepatica; liver damage sometimes occurs; related to liver rot | - |
| fashionables | 20 | - | - |
| fashionistas | 18 | - | - |
| fashiousness | 18 | - | - |
| fatherliness | 18 | the benignity and protectiveness of or befitting a father | the gentleness and fatherliness of the strange old man eased her fears |
| fathomlessly | 23 | - | - |
| fascinations | 17 | - | - |
| fascinatedly | 21 | - | - |
| farcicalness | 19 | - | - |
| farnarkeling | 20 | - | - |
| farsightedly | 23 | - | - |
| farthingales | 19 | - | - |
| farthingland | 20 | - | - |
| farthingless | 19 | - | - |
| fascicularly | 22 | - | - |
| fasciculated | 20 | - | - |
| fatigability | 21 | susceptibility to fatigue; a tendency to get tired or lose strength | - |
| faultfinders | 19 | - | - |
| faultfinding | 20 | tending to find and call attention to faults | an excessively demanding and faultfinding tutor |
| featherheads | 22 | - | - |
| featheriness | 18 | a light softness | - |
| featherlight | 22 | - | - |
| featlinesses | 15 | - | - |
| febrifacient | 22 | - | - |
| fecklessness | 21 | worthlessness due to being feeble and ineffectual | - |
| fecundations | 18 | - | - |
| federalising | 17 | - | - |
| featheredges | 20 | - | - |
| featheredged | 21 | having a rough edge; used of handmade paper or paper resembling handmade | - |
| faultinesses | 15 | - | - |
| fauxbourdons | 25 | - | - |
| favouredness | 19 | - | - |
| favouritisms | 20 | - | - |
| fearsomeness | 17 | - | - |
| feasibleness | 17 | the quality of being doable | - |
| federalistic | 18 | - | - |
| frigidnesses | 17 | - | - |
| frondiferous | 19 | - | - |
| frontalities | 15 | - | - |
| frontbencher | 22 | a member of the House of Commons who is a minister in the government or who holds an official position in an opposition party | - |
| frontiersman | 17 | a man who lives on the frontier | - |
| frontiersmen | 17 | - | - |
| frontrunners | 15 | - | - |
