frowzy (adj.) Look up frowzy at Dictionary.com
also frowsy, 1680s, possibly related to dialectal frowsty (q.v.).
frozen (adj.) Look up frozen at Dictionary.com
mid-14c., past participle adjective from freeze (v.). Figurative use is from 1570s. Of assets, bank accounts, etc., from 1922.
fructify (v.) Look up fructify at Dictionary.com
early 14c., from Old French fructifiier (12c.) "bear fruit, grow, develop," from Late Latin fructificare "bear fruit," from Latin fructus (see fruit) + root of facere "make" (see factitious). Related: Fructified; fructifying.
fructose (n.) Look up fructose at Dictionary.com
sugar found in fruit, 1857, coined in English from Latin fructus (see fruit) + chemical suffix -ose.
frug (n.) Look up frug at Dictionary.com
1964, popular U.S. dance derived from the Twist, of unknown origin.
frugal (adj.) Look up frugal at Dictionary.com
1590s, from Middle French frugal, from Latin frugalis, from undeclined adj. frugi "useful, proper, worthy, honest; temperate, economical," originally dative of frux (plural fruges) "fruit, produce," figuratively "value, result, success," related to fructus (see fruit). Sense evolved in Latin from "useful" to "profitable" to "economical." Related: Frugally.
frugality (n.) Look up frugality at Dictionary.com
1530s, from Middle French frugalité (14c.), from Latin frugalitatem (nominative frugalitas) "thriftiness, temperance, frugality," from frugalis (see frugal).
frugivorous (adj.) Look up frugivorous at Dictionary.com
from Latin frugi-, stem of frux "fruit, produce," related to fructus (see fruit) + -vorous.
fruit (n.) Look up fruit at Dictionary.com
late 12c., from Old French fruit "fruit, fruit eaten as dessert; harvest; virtuous action" (12c.), from Latin fructus "an enjoyment, delight, satisfaction; proceeds, produce, fruit, crops," from frug-, stem of frui "to use, enjoy," from PIE *bhrug- "agricultural produce," also "to enjoy" (see brook (v.)).

Classical sense preserved in fruits of one's labor. Originally in English meaning vegetables as well. Modern narrower sense is from early 13c. Meaning "odd person, eccentric" is from 1910; that of "male homosexual" is from 1935. The term also is noted in 1931 as tramp slang for "a girl or woman willing to oblige," probably from the fact of being "easy picking." Fruit salad recorded from 1861.
fruitcake (n.) Look up fruitcake at Dictionary.com
1838 in the literal sense, from fruit + cake (n.). Slang meaning "lunatic person" is first attested 1952.
fruitful (adj.) Look up fruitful at Dictionary.com
c.1300, of trees, from fruit + -ful. Related: Fruitfully; fruitfulness. Of animals or persons from early 16c.; of immaterial things from 1530s.
fruition (n.) Look up fruition at Dictionary.com
early 15c., "act of enjoying," from Middle French fruition and directly from Late Latin fruitionem (nominative fruitio) "enjoyment," noun of action from Latin frui "to use, enjoy." Sense of "act or state of bearing fruit" is first recorded 1885 by mistaken association with fruit; figurative sense is from 1889.
fruitless (adj.) Look up fruitless at Dictionary.com
mid-14c., "unprofitable," from fruit + -less. Meaning "barren, sterile" is from 1510s. Related: Fruitlessly.
fruity (adj.) Look up fruity at Dictionary.com
1650s, from fruit + -y (2). Related: Fruitiness.
frumbierding (n.) Look up frumbierding at Dictionary.com
an excellent Old English word meaning "a youth;" from fruma "first, beginning" + beard + -ling.
frumious (adj.) Look up frumious at Dictionary.com
1871, coined by Lewis Carroll, who said it was a blend of fuming and furious. He used it in both "Jabberwocky" and "The Hunting of the Snark" (1876).
frump (n.) Look up frump at Dictionary.com
"cross, unstylish person" 1817, perhaps from frumple (v.) "to wrinkle" (late 14c.), from Middle Dutch verrompelen "to wrinkle" (see frumpy).
frumpy (adj.) Look up frumpy at Dictionary.com
1746, "cross-tempered," from frump (n.) "bad temper" (1660s) and an earlier verb meaning "to mock, browbeat" (1550s), of obscure origin, perhaps imitative of a sneer or derisive snort. Sense of "sour-looking, unfashionable" is from 1825, but this may be a shortening of frumple "to wrinkle, crumple" (late 14c.), from Middle Dutch verrompelen, from ver- "completely" + rompelen "to rumple." Related: Frumps. See also frump.
frustrate (v.) Look up frustrate at Dictionary.com
mid-15c., from Latin frustratus, past participle of frustrari "to deceive, disappoint, frustrate," from frustra (adv.) "in vain, in error," related to fraus "injury, harm" (see fraud). Related: Frustrated; frustrating.
frustrated (adj.) Look up frustrated at Dictionary.com
"disappointed," 1640s, past participle adjective from frustrate.
frustration (n.) Look up frustration at Dictionary.com
"act of frustrating," 1550s, from Latin frustrationem (nominative frustratio) "a deception, a disappointment," noun of action from past participle stem of frustrari (see frustrate). Earlier (mid-15c.) with a sense of "nullification."
frustum (n.) Look up frustum at Dictionary.com
1650s, from Latin frustum "piece broken off," from PIE *bhrus-to-, from root *bhreu- "to cut, break up" (see bruise (v.)).
fry (v.) Look up fry at Dictionary.com
late 13c., from Old French frire "to fry" (13c.), from Latin frigere "to roast or fry," from PIE *bher- (4) "to cook, bake" (cognates: Sanskrit bhrjjati "roasts," bharjanah "roasting;" Persian birishtan "to roast;" Greek phrygein "to roast, bake").

Meaning "execute in the electric chair" is U.S. slang from 1929. To go out of the frying pan into the fire is first attested in Thomas More (1532). The related noun is from 1630s. Related: Fried; frying. Frying pan recorded from mid-14c.
fry (n.) Look up fry at Dictionary.com
"young fish," late 13c., from Anglo-French frei, from Old French frai "spawn," from froier "to rub, spawn (by rubbing abdomen on sand)." First applied to human offspring 14c. in Scottish, though OED and some other sources trace this usage to Old Norse frjo, fræ "seed, offspring."
fryer (n.) Look up fryer at Dictionary.com
also frier, 1851 of fish for frying, 1923 of chickens; from fry (v.).
fubar (adj.) Look up fubar at Dictionary.com
by 1944, acronym from fucked up beyond all recognition. Said to be military slang originally.
fuchsia (n.) Look up fuchsia at Dictionary.com
red color, 1923, from the ornamental shrub, which was named 1753 from the Latinized name of German botanist Leonhard Fuchs (1501-1566). Not related to Latin fucus "seaweed, sea wrack, tangle," which also gave its name to a red color prepared from it. Latin fucus is from or related to Greek phykos "seaweed," also "red paint, rouge."
fuck (v.) Look up fuck at Dictionary.com
until recently a difficult word to trace, in part because it was taboo to the editors of the original OED when the "F" volume was compiled, 1893-97. Written form only attested from early 16c. OED 2nd edition cites 1503, in the form fukkit; earliest appearance of current spelling is 1535 -- "Bischops ... may fuck thair fill and be vnmaryit" [Sir David Lyndesay, "Ane Satyre of the Thrie Estaits"], but presumably it is a much more ancient word than that, simply one that wasn't written in the kind of texts that have survived from Old English and Middle English. Buck cites proper name John le Fucker from 1278, but the surname could have other explanations. The word apparently is hinted at in a scurrilous 15c. poem, titled "Flen flyys," written in bastard Latin and Middle English. The relevant line reads:
Non sunt in celi
quia fuccant uuiuys of heli
"They [the monks] are not in heaven because they fuck the wives of [the town of] Ely." Fuccant is pseudo-Latin, and in the original it is written in cipher. The earliest examples of the word otherwise are from Scottish, which suggests a Scandinavian origin, perhaps from a word akin to Norwegian dialectal fukka "copulate," or Swedish dialectal focka "copulate, strike, push," and fock "penis." Another theory traces it to Middle English fyke, fike "move restlessly, fidget," which also meant "dally, flirt," and probably is from a general North Sea Germanic word; compare Middle Dutch fokken, German ficken "fuck," earlier "make quick movements to and fro, flick," still earlier "itch, scratch;" the vulgar sense attested from 16c. This would parallel in sense the usual Middle English slang term for "have sexual intercourse," swive, from Old English swifan "to move lightly over, sweep" (see swivel). But OED remarks these "cannot be shown to be related" to the English word. Chronology and phonology rule out Shipley's attempt to derive it from Middle English firk "to press hard, beat."
Germanic words of similar form (f + vowel + consonant) and meaning 'copulate' are numerous. One of them is G. ficken. They often have additional senses, especially 'cheat,' but their basic meaning is 'move back and forth.' ... Most probably, fuck is a borrowing from Low German and has no cognates outside Germanic. [Liberman]
French foutre and Italian fottere look like the English word but are unrelated, derived rather from Latin futuere, which is perhaps from PIE root *bhau(t)- "knock, strike off," extended via a figurative use "from the sexual application of violent action" [Shipley; compare the sexual slang use of bang, etc.]. Popular and Internet derivations from acronyms (and the "pluck yew" fable) are merely ingenious trifling. The Old English word was hæman, from ham "dwelling, home," with a sense of "take home, co-habit." Fuck was outlawed in print in England (by the Obscene Publications Act, 1857) and the U.S. (by the Comstock Act, 1873). As a noun, it dates from 1670s. The word may have been shunned in print, but it continued in conversation, especially among soldiers during World War I.
It became so common that an effective way for the soldier to express this emotion was to omit this word. Thus if a sergeant said, 'Get your ----ing rifles!' it was understood as a matter of routine. But if he said 'Get your rifles!' there was an immediate implication of urgency and danger. [John Brophy, "Songs and Slang of the British Soldier: 1914-1918," pub. 1930]
The legal barriers broke down in the 20th century, with the "Ulysses" decision (U.S., 1933) and "Lady Chatterley's Lover" (U.S., 1959; U.K., 1960). Johnson excluded the word, and fuck wasn't in a single English language dictionary from 1795 to 1965. "The Penguin Dictionary" broke the taboo in the latter year. Houghton Mifflin followed, in 1969, with "The American Heritage Dictionary," but it also published a "Clean Green" edition without the word, to assure itself access to the lucrative public high school market.

The abbreviation F (or eff) probably began as euphemistic, but by 1943 it was being used as a cuss word, too. In 1948, the publishers of "The Naked and the Dead" persuaded Norman Mailer to use the euphemism fug instead. When Mailer later was introduced to Dorothy Parker, she greeted him with, "So you're the man who can't spell 'fuck' " [The quip sometimes is attributed to Tallulah Bankhead]. Hemingway used muck in "For whom the Bell Tolls" (1940). The major breakthrough in publication was James Jones' "From Here to Eternity" (1950), with 50 fucks (down from 258 in the original manuscript). Egyptian legal agreements from the 23rd Dynasty (749-21 B.C.E.) frequently include the phrase, "If you do not obey this decree, may a donkey copulate with you!" [Reinhold Aman, "Maledicta," Summer 1977]. Fuck-all "nothing" first recorded 1960.

Verbal phrase fuck up "to ruin, spoil, destroy" first attested c.1916. A widespread group of Slavic words (such as Polish pierdolić) can mean both "fornicate" and "make a mistake." Fuck off attested from 1929; as a command to depart, by 1944. Flying fuck originally meant "have sex on horseback" and is first attested c.1800 in broadside ballad "New Feats of Horsemanship." For the unkillable urban legend that this word is an acronym of some sort (a fiction traceable on the Internet to 1995 but probably predating that) see here, and also here. Related: Fucked; fucking. Agent noun fucker attested from 1590s in literal sense; by 1893 as a term of abuse (or admiration).
DUCK F-CK-R. The man who has the care of the poultry on board a ſhip of war. ["Classical Dictionary of the Vulgar Tongue," 1796]
fud (n.) Look up fud at Dictionary.com
"backside, buttocks," 1785, a Scottish and Northern dialect word of unknown origin, perhaps from Scandinavian.
fuddle (v.) Look up fuddle at Dictionary.com
1580s, originally "to get drunk," later "to confuse as though with drink" (c.1600), of uncertain origin, perhaps from Low German fuddeln "work in a slovenly manner (as if drunk)," from fuddle "worthless cloth." The more common derivative befuddle appeared 1887. Related: Fuddled; fuddling.
fuddy-duddy (n.) Look up fuddy-duddy at Dictionary.com
"old-fashioned person," 1871, American English, of uncertain origin.
fudge (v.) Look up fudge at Dictionary.com
"put together clumsily or dishonestly," 1610s, perhaps an alteration of fadge "make suit, fit" (1570s), of unknown origin. As an interjection meaning "lies, nonsense" from 1766; the noun meaning "nonsense" is 1791. It could be a natural extension from the verb. But Farmer suggests provincial French fuche, feuche, "an exclamation of contempt from Low German futsch = begone."

The traditional English story traces fudge in this sense to a sailor's retort to anything considered lies or nonsense, from Captain Fudge, "who always brought home his owners a good cargo of lies" [Isaac Disraeli, 1791, citing a pamphlet from 1700]. It seems there really was a late 17c. Captain Fudge, called "Lying Fudge," and perhaps his name reinforced this form of fadge in the sense of "contrive without the necessary materials." The surname is from Fuche, a pet form of the masc. proper name Fulcher, from Germanic and meaning literally "people-army."
fudge (n.) Look up fudge at Dictionary.com
type of confection, 1895, American English, apparently a word first used among students at women's colleges; perhaps a special use of fudge (v.).
'He lies,' answered Lord Etherington, 'so far as he pretends I know of such papers. I consider the whole story as froth -- foam, fudge, or whatever is most unsubstantial. ...' [Scott, "St. Ronan's Well," 1823]
fuel (n.) Look up fuel at Dictionary.com
early 14c., from Old French foaile "bundle of firewood," from Vulgar Latin legal term *focalia "right to demand material for making fire," neuter plural of Latin focalis "pertaining to a hearth," from focus "hearth" (see focus (n.)). Figurative use from 1570s.
fuel (v.) Look up fuel at Dictionary.com
1590s, from fuel (n.). Related: Fueled; fueling.
fug (n.) Look up fug at Dictionary.com
"thick, close, stuffy atmosphere," 1888.
fugacious (adj.) Look up fugacious at Dictionary.com
"fleeing, likely to flee," 1630s, from Latin fugaci-, stem of fugax "apt to flee, timid," figuratively "transitory, fleeting," from fugere "to flee" (see fugitive) + -ous. Related: Fugaciously; fugaciousness.
fugal (adj.) Look up fugal at Dictionary.com
1854, from fugue + -al (1).
fugitive Look up fugitive at Dictionary.com
late 14c. (adjective and noun), from Old French fugitif, from Latin fugitivus "fleeing" (but commonly used as a noun meaning "runaway, fugitive slave, deserter"), from past participle stem of fugere "to flee, fly, take flight, run away; become a fugitive, leave the country, go into exile; pass quickly; vanish, disappear, perish; avoid, shun; escape the notice of, be unknown to," from PIE root *bheug- (1) "to flee" (cognates: Greek pheugein "to flee," Lithuanian bugstu "be frightened," bauginti "frighten someone," baugus "timid, nervous"). Replaced Old English flyma.
fugly (adj.) Look up fugly at Dictionary.com
by 1995, a contraction of fucking ugly.
fugue (n.) Look up fugue at Dictionary.com
1590s, fuge, from Italian fuga "ardor," literally "flight," from Latin fuga "act of fleeing," from fugere "to flee" (see fugitive). Current spelling (1660s) is from the French version of the Italian word.
A Fugue is a composition founded upon one subject, announced at first in one part alone, and subsequently imitated by all the other parts in turn, according to certain general principles to be hereafter explained. The name is derived from the Latin word fuga, a flight, from the idea that one part starts on its course alone, and that those which enter later are pursuing it. ["Fugue," Ebenezer Prout, 1891]
Fuhrer (n.) Look up Fuhrer at Dictionary.com
1934, from Führer und Reichskanzler, title assumed by Hitler in 1934 as head of the German state, from German Führer "leader," from führen "to lead," from Middle High German vüeren "to lead, drive," from Old High German fuoren "to set in motion, lead," causative of Old High German faran "to go, travel," which is cognate with Old English faran (see fare (v.)). Hitler's title was modeled on Mussolini's Duce.
Fulbright Look up Fulbright at Dictionary.com
typically a reference to U.S. Sen. J. William Fulbright (1905-1995) of Arkansas, especially to the Fulbright Act of 1946, which authorized proceeds from sales of U.S. war surplus materials to be used to fund higher education overseas.
fulcrum (n.) Look up fulcrum at Dictionary.com
1670s, "a prop, a support" (on which a lever turns), from Latin fulcrum "bedpost," from fulcire "to prop up, support" (see balk).
fulfil (v.) Look up fulfil at Dictionary.com
see fulfill. Related: fulfilment.
fulfill (v.) Look up fulfill at Dictionary.com
Old English fullfyllan "fill up, make full," from full + fyllan (see fill, which is ultimately from the root of full). Used early of prophecy and perhaps a translation of Latin implere, adimplere. Related: Fulfilled; fulfilling.
fulfillment (n.) Look up fulfillment at Dictionary.com
1775, from fulfill + -ment.
fulgent (adj.) Look up fulgent at Dictionary.com
early 15c., from Latin fulgentem (nominative fulgens) "shining, bright," present participle of fulgere "to shine" (see fulminate).
full (adj.) Look up full at Dictionary.com
Old English full "completely, full, perfect, entire, utter," from Proto-Germanic *fullaz (cognates: Old Saxon full, Old Frisian ful, Old Norse fullr, Old High German fol, German voll, Gothic fulls), from PIE *pele- (1) "to fill" (see poly-).

Adverbial sense was common in Middle English (full well, full many, etc.). Related: Fuller; fullest. Full moon was Old English fulles monan; first record of full-blood in relation to racial purity is from 1812. Full house is 1710 in the theatrical sense, 1887 in the poker sense.
full (v.) Look up full at Dictionary.com
"to tread or beat cloth to cleanse or thicken it," late 14c., from Old French fouler, from Latin fullo (see foil (v.)); Old English had the agent-noun fullere, probably directly from Latin fullo.