Franciscan Look up Franciscan at Dictionary.com
1590s, "friar of the order founded in 1209 by St. Francis (Medieval Latin Franciscus) of Assisi" (1182-1226). Also as an adjective.
Franco- Look up Franco- at Dictionary.com
word-forming element meaning "French," from Medieval Latin comb. form of Franci "the Franks," hence, by extension, "the French" (see Frank). Used in forming English compound words from early 18c.
Francophile (adj.) Look up Francophile at Dictionary.com
1875, from Franco- + -phile. "A newspaper word" [OED]. Its opposite, Francophobe, is recorded from 1890 (implied in Francophobic; Francophobia is from 1862).
Francophone (adj.) Look up Francophone at Dictionary.com
1900, from Franco- + -phone.
frangible (adj.) Look up frangible at Dictionary.com
early 15c., from Middle French frangible, from Medieval Latin frangibilis, from Latin frangere "to break" (see fraction).
frangipani (n.) Look up frangipani at Dictionary.com
type of shrub, 1864; earlier frangipane, a type of perfume (1670s), from French frangipane (16c.), said to be from Frangipani, the family name of the Italian inventor.
FRANGIPANI, an illustrious and powerful Roman House, which traces its origin to the 7th c., and attained the summit of its glory in the 11th and 12th centuries. ... The origin of the name Frangipani is attributed to the family's benevolent distribution of bread in time of famine. ["Chambers's Encyclopædia," 1868]
Franglais (n.) Look up Franglais at Dictionary.com
"French marred by many English words," 1959, from French, from français "French" + anglais "English."
frank (adj.) Look up frank at Dictionary.com
c.1300, "free, liberal, generous," from Old French franc "free (not servile), sincere, genuine, open, gracious; worthy" (12c.), from Medieval Latin Franc "a freeman, a Frank" (see Frank). The connection is that only Franks, as the conquering class, had the status of freemen. Sense of "outspoken" first recorded in English 1540s.
Frank Look up Frank at Dictionary.com
one of the Germanic people that conquered Celtic northern Gaul from the Romans c.500 C.E. and made it into France, from Frankish *Frank (cognate with Old High German Franko, Old English Franca). The origin of the ethnic name is uncertain; it traditionally is said to be from the old Germanic word *frankon "javelin, lance" (compare Old English franca), their preferred weapon, but the reverse may be the case. Compare also Saxon, traditionally from root of Old English seax "knife." In the Levant, this was the name given to anyone of Western nationality (compare Feringhee and lingua franca).
frank (n.) Look up frank at Dictionary.com
short for frankfurter, by 1916, American English. Franks and beans attested by 1953.
frank (v.) Look up frank at Dictionary.com
"to free a letter for carriage or an article for publication," 1708, from shortened form of French affranchir, from the same source as frank (adj.). Related: Franked; franking.
Frankenstein Look up Frankenstein at Dictionary.com
allusive use dates to 1838, from Baron Frankenstein (German, "free stone"), character in Mary Shelley's 1818 novel "Frankenstein: The Modern Prometheus." Commonly used, mistakenly, as the proper name of the monster he created, and thus franken- extended 1990s as a prefix to mean "non-natural."
frankfurter (n.) Look up frankfurter at Dictionary.com
"hot dog," 1894, American English, from German Frankfurter "of Frankfurt," because a smoked-beef-and-pork sausage somewhat like a U.S. hot dog was originally made in Germany, where it was associated with the city of Frankfurt am Main (literally "ford of the Franks on the River Main"). Attested from 1877 as Frankfort sausage.
frankincense (n.) Look up frankincense at Dictionary.com
late 14c., apparently from Old French franc encense, from franc "noble, true" (see frank (adj.)), in this case probably signifying "of the highest quality" + encens "incense" (see incense (n.)).
Frankish (adj.) Look up Frankish at Dictionary.com
1802, from Frank + -ish. As the name of the West Germanic language spoken by the ancient Franks, from 1863. (Frenkis is recorded c.1400.). The language influenced French, especially in the northern regions from which the Normans conquered England in 1066.
Franklin Look up Franklin at Dictionary.com
surname attested from late 12c., Middle English Frankeleyn, from Anglo-French fraunclein "a land-owner of free but not noble birth," from Old French franc "free" (see frank (adj.)), with Germanic suffix also found in chamberlain.

The Franklin stove (1787) so called because it was invented by U.S. scientist/politician Benjamin Franklin (1706-1790). In early 19c., lightning rods often were called Franklins.
frankly (adv.) Look up frankly at Dictionary.com
1530s, from frank (adj.) + -ly (2).
frankness (n.) Look up frankness at Dictionary.com
1550s, from frank (adj.) + -ness.
frantic (adj.) Look up frantic at Dictionary.com
mid-14c., "insane," unexplained variant of Middle English frentik (see frenetic). Transferred meaning "affected by wild excitement" is from late 15c. Of the adverbial forms, frantically (1749) is later than franticly (1540s).
frap (v.) Look up frap at Dictionary.com
early 14c., from Old French fraper (12c., Modern French frapper) "to strike, hit beat," cognate with Italian frappare "to strike," of unknown origin, perhaps imitative (compare rap (n.)). Nautical sense of "bind tightly" is from 1540s. Related: Frapped; frapping.
frappe (n.) Look up frappe at Dictionary.com
"iced drink," 1922, American English (earlier as an adjective, "iced," 1848), from French frappé, from past participle of frapper "to chill," literally "to beat," from Old French fraper "to hit, strike" (see frap (v.)).
frass (n.) Look up frass at Dictionary.com
insect excrement, 1854, from German frasz, from root of fressen "to devour, to eat as a beast does" (see fret (v.)).
frat (n.) Look up frat at Dictionary.com
student slang shortening of fraternity, by 1888.
fraternal (adj.) Look up fraternal at Dictionary.com
early 15c., from Middle French fraternel and directly from Medieval Latin fraternalis, from Latin fraternus "brotherly" (see fraternity). The noun meaning "fraternal twin" is recorded by 1911.
fraternally (adv.) Look up fraternally at Dictionary.com
1610s, from fraternal + -ly (2).
fraternity (n.) Look up fraternity at Dictionary.com
early 14c., "body of men associated by common interest," from Old French fraternité (12c.), from Latin fraternitatem (nominative fraternitas) "brotherhood," from fraternus "brotherly," from frater "brother," from PIE *bhrater (see brother). Meaning "state or condition of being as brothers" is from late 15c. College Greek-letter organization sense is from 1777, first in reference to Phi Beta Kappa.
fraternization (n.) Look up fraternization at Dictionary.com
1792, "act of uniting as brothers," from French fraternization (see fraternity); of relations between occupying soldiers and occupied civilians, from mid-19c; explicitly from 1944 (see fraternize).
fraternize (v.) Look up fraternize at Dictionary.com
1610s, "to sympathize as brothers," from French fraterniser, from Medieval Latin fraternizare, from fraternus "brotherly" (see fraternity). Military sense of "cultivate friendship with enemy troops" is from 1897 (used in World War I with reference to the Christmas Truce). Used oddly by World War II armed forces to mean "have sex with women from enemy countries."
A piece of frat, Wren-language for any attractive young woman -- ex-enemy -- in occupied territory. [John Irving, "Royal Navalese," 1946]
Related: Fraternized; fraternizing.
fratricidal (adj.) Look up fratricidal at Dictionary.com
1804, from fratricide + -al (1).
fratricide (n.) Look up fratricide at Dictionary.com
mid-15c., "person who kills a brother;" 1560s, "act of killing a brother," from Latin fratricida "brother-slayer," from frater "brother" (see brother) + cida "killer," or cidum "a killing," both from caedere "to kill, to cut down" (see -cide). Among several Old English words for this were broðorbana "one who kills a brother;" broðorcwealm "act of killing a brother."
frau (n.) Look up frau at Dictionary.com
"married woman," 1813, from German Frau "woman, wife," from Middle High German vrouwe "lady, mistress," from Old High German frouwa "mistress, lady" (9c.), from Proto-Germanic *frowo- "lady," fem. of *frawan "lord," from PIE root *per- (1) "beyond, forward," in extended senses "chief, first" (see per).
fraud (n.) Look up fraud at Dictionary.com
"criminal deception," early 14c., from Old French fraude "deception, fraud" (13c.), from Latin fraudem (nominative fraus) "deceit, injury." The noun meaning "impostor, humbug" is attested from 1850. Pious fraud "deception practiced for the sake of what is deemed a good purpose" is from 1560s.
fraudster (n.) Look up fraudster at Dictionary.com
1975, from fraud + -ster. Earlier words were fraudsman (1610s); frauditor (1550s).
fraudulent (adj.) Look up fraudulent at Dictionary.com
early 15c., from Middle French fraudulent, from Latin fraudulentus "cheating, deceitful," from fraus (see fraud). Related: Fraudulently.
frauendienst (n.) Look up frauendienst at Dictionary.com
"excessive chivalry toward women," from the title of a work by Ulrich von Lichtenstein (13c.), from German frauen, plural of frau + dienst "service."
fraught (v.) Look up fraught at Dictionary.com
early 14c., "laden" (of vessels), past participle of Middle English fraughten "to load (a ship) with cargo," from fraght "cargo, lading of a ship" (early 13c.), variant of freight; influenced by Middle Dutch vrachten "to load or furnish with cargo," from Proto-Germanic *fra-aihtiz (see freight (n.)). Figurative sense is first attested 1570s.
fraulein (n.) Look up fraulein at Dictionary.com
German Fräulein "unmarried woman" (Middle High German vrouwelin), diminutive of Frau "lady" (see frau).
fray (n.) Look up fray at Dictionary.com
mid-14c., "feeling of alarm," shortening of affray (q.v.; see also afraid). Meaning "a brawl, a fight" is from early 15c. (but late 14c. in Anglo-Latin). Fraymaker "fighter, brawler" is an excellent word from a 1530s statute.
fray (v.) Look up fray at Dictionary.com
"wear out by rubbing," c.1400, from Middle French frayer "to rub against," from Old French froiier "rub, scrape," from Latin fricare "to rub, rub down" (see friction). Related: Frayed; fraying.
frayed (adj.) Look up frayed at Dictionary.com
"worn by rubbing," 1814, past participle adjective from fray (v.).
frazzle (v.) Look up frazzle at Dictionary.com
c.1825, "to unravel" (of clothing), from East Anglian variant of 17c. fasel "to unravel, fray" (as the end of a rope), from Middle English facelyn "to fray" (mid-15c.), from fasylle "fringe, frayed edge," diminutive of Old English fæs "fringe." Related: Frazzled, frazzling. Compare German Faser "thread, fiber, filament," Middle Dutch vese "fringe, fiber, chaff." Probably influenced in form by fray (v.). As a noun, from 1865, American English.
freak (n.) Look up freak at Dictionary.com
1560s, "sudden turn of mind," of unknown origin, perhaps related to Old English frician "to dance" (not recorded in Middle English, but the word may have survived in dialect) [OED, Barnhart], or perhaps from Middle English frek "bold, quickly," from Old English frec "greedy, gluttonous" (compare German frech "bold, impudent").

Sense of "capricious notion" (1560s) and "unusual thing, fancy" (1784) preceded that of "strange or abnormal individual" (first in freak of nature, 1847; compare Latin lusus naturæ, which was used in English from 1660s). The sense in health freak, ecology freak, etc. is attested from 1908 (originally Kodak freak, a camera buff). Freak show attested from 1887.
freak (v.) Look up freak at Dictionary.com
"change, distort," 1911, from freak (n.). Earlier, "to streak or fleck randomly" (1630s). Related: Freaked; freaking.
freak out (n.) Look up freak out at Dictionary.com
also freakout "bad psychedelic drug trip or something comparable to one," 1966 (despite an amusing coincidental appearance of the phrase dug up by the OED in "Fanny Hill" from 1749), from verbal phrase freak out, attested from 1965 in the drug sense (from 1902 in a sense "change, distort, come out of alignment"); see freak (n.). Freak (n.) "drug user" is attested from 1945.
She had had her freak out, and had pretty plentifully drowned her curiosity in a glut of pleasure .... [Cleland, "Memoirs of a Woman of Pleasure," 1749]
freakish (adj.) Look up freakish at Dictionary.com
1650s, "capricious," from freak (n.) + -ish. Meaning "grotesque" is recorded from 1805. Related: Freakishly; freakishness.
freaky (adj.) Look up freaky at Dictionary.com
1824, from freak (n.) + -y (2). Psychedelic sense is from 1966.
freckle (n.) Look up freckle at Dictionary.com
late 14c., also frecken, probably from Old Norse freknur (plural) "freckles" (cognates: Icelandic frekna, Danish fregne, Swedish frägne "freckle"), from PIE *(s)preg- "to jerk, scatter" (see sprout (v.)). Related: Freckles.
freckle (v.) Look up freckle at Dictionary.com
late 14c. (implied in fracled "spotted," from freckle (n.); freckle as a verb is recorded from 1610s. Related: Freckled; freckling.
Freddie Mac Look up Freddie Mac at Dictionary.com
by 1992, vaguely from Federal Home Loan Mortgage Corporation.
Frederick Look up Frederick at Dictionary.com
masc. proper name, from French Frédéric, from German Friedrich, from Old High German Fridurih, from Proto-Germanic *Frid-ric, literally "peace-rule." Not a common name in medieval England, found mostly in the eastern counties.