fishmonger (n.) Look up fishmonger at Dictionary.com
mid-15c., from fish (n.) + monger (n.).
fishnet (n.) Look up fishnet at Dictionary.com
"net used to catch fish," Old English fiscnett; see fish (n.) + net (n.). From 1881 in reference to a type of stitch that resembles fishnet. By 1912 in reference to women's hosiery.
There has been considerable misconception as to the purpose of the fishnet hose imported by the ECONOMIST and illustrated on page 177. The newspaper representatives who viewed it at the ECONOMIST'S fashion exhibition used it as a pretext for many humorous articles and conveyed the impression that it was to be worn next the skin. The purpose is to use it over white or colored hose, to produce an unusual effect. Every store should have one or more pairs for exhibition purposes, if for no other reason. ["Dry Goods Economist," June 22, 1912]
fishpond (n.) Look up fishpond at Dictionary.com
also fish-pond, mid-15c., from fish (n.) + pond (n.).
fishwife (n.) Look up fishwife at Dictionary.com
1520s, from fish (n.) + wife (n.) in the "woman" sense. Also fish-fag.
fishy (adj.) Look up fishy at Dictionary.com
late 15c., "fish-like, slimy," from fish (n.) + -y (2). In reference to taste, from 1540s. Sense of "shady, questionable" is first recorded 1840, perhaps from the notion of "slipperiness," or of giving off a bad odor.
fisk (v.) Look up fisk at Dictionary.com
2002, an Internet argument tactic involving a reprinting of a text, interlarded with rebuttals and refutations. Named for English journalist Robert Fisk (b.1946), Middle East correspondent for the "Independent," whose writing often criticizes America and Israel and is somewhat noted for looseness with details. Critics responded in this style. Related: Fisked; fisking.
fissile (adj.) Look up fissile at Dictionary.com
1660s, from Latin fissilis "that which may be cleft or split," from fissus, past participle of findere "cleave, split, separate, divide" (see fissure).
fission (n.) Look up fission at Dictionary.com
1819, "division of a cell or organism," from Latin fissionem (nominative fissio) "a breaking up, cleaving," from past participle stem of findere "to split" (see fissure). Cognate with Old English bitan "to bite." Nuclear physics sense is 1939. As a verb, from 1929.
fissure (n.) Look up fissure at Dictionary.com
c.1400, from Old French fissure (13c.) and directly from Latin fissura "a cleft," from root of findere "to split, cleave, separate, divide," from PIE *bhi-n-d-, from root *bheid- "to split" (cognates: Sanskrit bhinadmi "I cleave," Old High German bizzan "to bite," Old English bita "a piece bitten off, morsel," Old Norse beita "to hunt with dogs," beita "pasture, food").
fist (n.) Look up fist at Dictionary.com
Old English fyst "fist, clenched hand," from West Germanic *fustiz (cognates: Old Saxon fust, Old High German fust, Old Frisian fest, Middle Dutch vuust, Dutch vuist, German Faust), from Proto-Germanic *funhstiz, probably ultimately from PIE *penkwe- "five" (see five, and compare Old Church Slavonic pesti, Russian piasti "fist").

Meaning "a blow with the fist" is from 1767. Fist-fight "duel with the fists" is from c.1600. As a verb, Old English had fystlian "to strike with the fist."
fistful (n.) Look up fistful at Dictionary.com
"as much as a fist will hold," 1610s, from fist (n.) + -ful.
fistiana (n.) Look up fistiana at Dictionary.com
"anecdotes of pugilists; boxing lore," 1839, from fist (n.) + -iana.
fistic (adj.) Look up fistic at Dictionary.com
"relating to or done with the fists," 1806, from fist (n.) + -ic. Long considered improper English ("Not in dignified use" - OED).
fisticuffs (n.) Look up fisticuffs at Dictionary.com
c.1600, fisty cuffes, from fist (n.) + cuff (n.) "a blow" (see cuff (v.2)), with the form perhaps in imitation of handiwork. Related: Fisticuff.
fistula (n.) Look up fistula at Dictionary.com
"long, narrow ulcer," late 14c., from Latin fistula "a pipe; ulcer," of uncertain origin. Related: Fistular; fistulous (Latin fistulosus "full of holes; tubular").
No certain etymology. The best comparison seems to be with festuca "stalk, straw" and maybe ferula "giant fennel" (if from *fesula): the forms of a "pipe" and a "stalk" are similar. The vacillation between fest- and fist- occurs within festuca itself, and might be dialectal, or allophonic within Latin. [de Vaan]
fit (n.1) Look up fit at Dictionary.com
1680s, "process of fitting," from fit (v.). From 1823 as "the fitting of one thing to another;" 1831 as "the way something fits."
fit (v.) Look up fit at Dictionary.com
c.1400, "to marshal or deploy (troops);" early 15c. as "be fitting or proper, be suitable," from fit (adj.) and perhaps in part from Scandinavian (compare Old Norse fitja "knit"). From 1580s as "be the right shape." Transitive sense of "provide with what is suitable" is from 1590s; that of "make fit or suitable, bring into corresponding form or condition" is from c.1600. Related: Fitted; fitting. Fitted sheets is attested from 1948.
fit (n.2) Look up fit at Dictionary.com
"paroxysm, sudden attack" (as of anger), 1540s, probably via Middle English sense of "painful, exciting experience" (early 14c.), from Old English fitt "conflict, struggle," of uncertain origin, with no clear cognates outside English. Perhaps ultimately cognate with fit (adj.) on notion of "to meet." Meaning "sudden impulse toward activity or effort" is from 1580s. Phrase by fits and starts first attested 1610s (by fits is from 1580s).
fit (adj.) Look up fit at Dictionary.com
"suited to the circumstances, proper," mid-15c., of unknown origin, perhaps from Middle English noun fit "an adversary of equal power" (mid-13c.), which is perhaps connected to fit (n.1). In athletics, "in condition, properly trained for action," from 1869. Related: Fitter; fittest. Survival of the fittest (1867) coined by H. Spencer.
fit (n.3) Look up fit at Dictionary.com
part of a poem, Old English fitt, of unknown origin; perhaps related to fit (n.2).
fitful (adj.) Look up fitful at Dictionary.com
used once by Shakespeare ("Life's fitful fever," "Macbeth," 1605) in sense of "characterized by fits," from fit (n.2) + -ful. then Revived in Romantic poetry late 18c. with a sense of "shifting, changing." Related: Fitfully (1792); fitfulness.
fitness (n.) Look up fitness at Dictionary.com
1570s, "state or quality of being suitable," from fit (adj.) + -ness. Meaning "state of being physically fit" is from 1935.
fitter (n.) Look up fitter at Dictionary.com
1650s, agent noun from fit (v.).
fitting (adj.) Look up fitting at Dictionary.com
"proper, befitting, right," early 15c., present-participle adjective from fit (v.). Related: Fittingly.
fitting (n.) Look up fitting at Dictionary.com
c.1600, verbal noun from fit (v.). Meaning "action of fitting on a garment" is from 1900.
fitz (n.) Look up fitz at Dictionary.com
Anglo-French fitz, from Old French fils, from Latin filius "son of" (see filial); used regularly in official rolls and hence the first element of many modern surnames; in later times used of illegitimate issue of royalty.
five (n.) Look up five at Dictionary.com
Old English fif "five," from Proto-Germanic *fimfe (cognates: Old Frisian fif, Old Saxon fif, Dutch vijf, Old Norse fimm, Old High German funf, Gothic fimf), from PIE *penkwe- (cognates: Sanskrit panca, Greek pente, Latin quinque, Old Church Slavonic peti, Lithuanian penke, Old Welsh pimp). The sound shift that removed the *-m- is a regular development involving Old English, Old Frisian, and Old Saxon (as in thought, from stem of think; couth from *kunthaz; us from *uns).

Five-and-ten (Cent Store) is from 1880, American English, with reference to prices of goods for sale. Five-star (adj.) is from 1913 of hotels, 1945 of generals. Slang five-finger discount "theft" is from 1966. The original five-year plan was 1928 in the U.S.S.R. Five o'clock shadow attested by 1937.
[under picture of a pretty girl] "If I were a man I'd pay attention to that phrase '5 O'Clock Shadow.' It's that messy beard growth which appears prematurely about 5 P.M." [Advertisement for Gem razors and blades, Life," May 9, 1938]
fivefold (adv.) Look up fivefold at Dictionary.com
1570s, from earlier use as an adjective, from Old English fiffeald (adj.); see five + -fold.
fiver (n.) Look up fiver at Dictionary.com
1843, "five-pound note," from five + -er.
fix (v.) Look up fix at Dictionary.com
late 14c., "set (one's eyes or mind) on something" (a figurative use), probably from Old French verb *fixer, from fixe "fixed," from Latin fixus "fixed, fast, immovable; established, settled," past participle adjective from figere "to fix, fasten, drive, thrust in; pierce through, transfix," also figurative, from PIE root *dhigw- "to stick, to fix" (see dike).

Sense of "fasten, attach" is c.1400; that of "to make (colors, etc.) fast or permanent" is from 1660s. The meaning "settle, assign" evolved into "adjust, arrange" (1660s), then "repair" (1737). Sense of "tamper with" (a fight, a jury, etc.) is from 1790. As euphemism for "castrate a pet" it dates from 1930. Related: Fixed; fixing.
fix (n.) Look up fix at Dictionary.com
"position from which it is difficult to move," 1809, American English, from fix (v.). Meaning "dose of narcotic" is from 1934, shortened from fix-up (1867, originally in reference to liquor). Meaning "reliable indication of the position of a ship, plane, etc." (by reference to fixed positions) is from 1902.
fixable (adj.) Look up fixable at Dictionary.com
late 15c., from fix (v.) + -able.
fixate (v.) Look up fixate at Dictionary.com
1885, "to fix, make stable," from fix (v.) + -ate. Meaning "to gaze upon" is from 1889. Psychological sense is from 1926, originally in Freudian theory, in this case perhaps a back-formation from fixation. Meaning "become fixed" is from 1888. Related: Fixated; fixating.
fixation (n.) Look up fixation at Dictionary.com
late 14c., fixacion, an alchemical word, "action of reducing a volatile substance to a permanent bodily form," from Medieval Latin fixationem (nominative fixatio), noun of action from past participle stem of Latin fixare, frequentative of figere "to fix" (see fix (v.)). Meaning "condition of being fixed" is from 1630s. Used in the Freudian sense since 1910.
fixative (adj.) Look up fixative at Dictionary.com
1640s, from fix (v.) + -ative, suffix meaning "of or related to; tending to." As a noun, from 1870, "that which fixes."
fixed (adj.) Look up fixed at Dictionary.com
late 14c., of stars, "unchangeable in position," past participle adjective from fix (v.). Related: fixedly (1590s). Fixed-income (n.) is from 1767.
fixer (n.) Look up fixer at Dictionary.com
1849, of chemicals, etc.; 1885 as a person who "makes things right;" agent noun from fix (v.). Fixer-upper is from 1967 as "that which repairs other things" (in an advertisement for a glue); by 1976 as a real-estate euphemism for "property that needs a lot of work."
fixings (n.) Look up fixings at Dictionary.com
"apparatus," 1820, American English, from fixing "act of putting in order" (c.1600), verbal noun from fix (v.). American English sense of "food, garnishing" is attested from 1839.
fixity (n.) Look up fixity at Dictionary.com
1660s in physics; general use from 1791; see fix (v.) + -ity.
fixture (n.) Look up fixture at Dictionary.com
1590s, "act of fixing," perhaps from fix (v.) on model of mixture, or from an assumed Latin *fixitatem. Meaning "anything fixed or securely fastened" is from 1812, an alteration of fixure (c.1600).
fizgig (n.) Look up fizgig at Dictionary.com
"light, frivolous woman," 1520s, first element of uncertain origin, second element is Middle English gig "frivolous person" (see gig (n.1)).
fizz (v.) Look up fizz at Dictionary.com
"make a hissing sound," 1660s, of imitative origin. Related: Fizzed; fizzing. The noun is recorded from 1812; meaning "effervescent drink" is from 1864, from the sound it makes.
fizzle (v.) Look up fizzle at Dictionary.com
1530s, "to break wind without noise," probably altered from obsolete fist, from Middle English fisten "break wind" (see feisty) + frequentative suffix -le. Related: Fizzled; fizzling.

Meaning "make a noise as of a liquid or gas forced out a narrow aperture" is from 1859, "usually with special reference to the weakness and sudden diminution or cessation of such sound" [Century Dictionary], hence the figurative sense "prove a failure, stop abruptly after a more-or-less brilliant start." But this sense is earlier and dates to at least 1847 in American English college slang, along with the noun sense of "failure, fiasco" (1846), also originally U.S. college slang, "a failure in answering an examination by a professor." Barnhart says it is "not considered as derived from the verb." Halliwell ("Archaic and Provincial Words," 1846) has fizzle (v.) as "To do anything without noise," which might connect the college slang with the older word via some notion of mumbled and stifled performance:
In many colleges in the United States, this word is applied to a bad recitation, probably from the want of distinct articulation, which usually attends such performances. It is further explained in the Yale Banger, November 10, 1846: "This figure of a wounded snake is intended to represent what in technical language is termed a fizzle. The best judges have decided that to get just one third of the meaning right constitutes a perfect fizzle." [John Bartlett, "A Collection of College Words and Customs," Cambridge, 1851]
fizzy (adj.) Look up fizzy at Dictionary.com
1885, from fizz + -y (2).
fjord (n.) Look up fjord at Dictionary.com
1670s, from Norwegian fiord, from Old Norse fjörðr, from North Germanic *ferthuz, from PIE *prtus, from *per- "going, passage" (see port (n.1)).
flab (n.) Look up flab at Dictionary.com
"fat, flabbiness," 1951, back-formation from flabby.
flabbergast (v.) Look up flabbergast at Dictionary.com
1772, flabbergasted, mentioned (with bored) in a magazine article that year as a new vogue word, of uncertain origin. Perhaps from some dialect (in 1823 flabbergast was noted as a Sussex word), perhaps ultimately an arbitrary formation alluding to flabby or flapper and aghast. "Like many other popular words expressing intensity of action, ... not separable into definite elements or traceable to a definite origin" [Century Dictionary]. Related: Flabbergasted; flabbergasting; flabbergastation.
flabbergasted (adj.) Look up flabbergasted at Dictionary.com
see flabbergast.
flabby (adj.) Look up flabby at Dictionary.com
1690s, regarded as a softened variant of flappy, which is recorded in the sense of "softly fleshy" from 1590s; see flap (n.). Related: Flabbily; flabbiness.
flaccid (adj.) Look up flaccid at Dictionary.com
1610s, from French flaccide or directly from Latin flaccidus "flabby, pendulous, weak, drooping," from flaccus "flabby, flap-eared," of uncertain origin (OED suggests it's imitative). Related: Flaccidly; flacidness; flaccidity; flaccescency.