foresight (n.) Look up foresight at Dictionary.com
c.1300, from fore- + sight (n.). Compare German Vorsicht "attention, caution, cautiousness."
foreskin (n.) Look up foreskin at Dictionary.com
1530s, from fore- + skin (n.). A loan-translation of Latin prepuce.
forest (n.) Look up forest at Dictionary.com
late 13c., "extensive tree-covered district," especially one set aside for royal hunting and under the protection of the king, from Old French forest "forest, wood, woodland" (Modern French forêt), probably ultimately from Late Latin/Medieval Latin forestem silvam "the outside woods," a term from the Capitularies of Charlemagne denoting "the royal forest;" perhaps via Old High German forst, from Latin foris "outside" (see foreign), with a sense of "beyond the park," the park being the main or central fenced woodland.

Another theory traces it through Medieval Latin forestis, originally "forest preserve, game preserve," from Latin forum in legal sense "court, judgment;" in other words "land subject to a ban" [Buck]. Replaced Old English wudu.
forest (v.) Look up forest at Dictionary.com
1818 (forested is attested from 1610s), from forest (n.).
forestall (v.) Look up forestall at Dictionary.com
late 14c. (implied in forestalling), "to lie in wait for;" also "to intercept goods before they reach public markets and buy them privately" (formerly a crime; mid-14c. in this sense in Anglo-French), from Old English noun foresteall "intervention, hindrance (of justice); an ambush, a waylaying," literally "a standing before (someone)," from fore- "before" + steall "standing position" (see stall (n.1)). Modern sense of "to anticipate and delay" is from 1580s. Related: Forestalled; forestalling.
forester (n.) Look up forester at Dictionary.com
late 13c. (late 12c. as a surname), from Old French forestier "forest ranger, forest-dweller" (also, as an adjective, "wild, rough, coarse, unsociable"), from forest (see forest (n.)).
forestry (n.) Look up forestry at Dictionary.com
1690s, "privilege of a royal forest," from Old French foresterie, from forest (see forest). Meaning "science of managing forests" is from 1859.
foretaste (n.) Look up foretaste at Dictionary.com
early 15c., from fore- + taste (n.). As a verb, from mid-15c.
foretell (v.) Look up foretell at Dictionary.com
c.1300, from fore- + tell (v.). Related: Foretold; foretelling.
forethought (n.) Look up forethought at Dictionary.com
c.1300, from fore- + thought. Old English had foreðencan "to premeditate, consider."
foretime (n.) Look up foretime at Dictionary.com
1530s, from fore- + time (n.).
forever (adv.) Look up forever at Dictionary.com
late 14c., for ever; from for + ever. One word from late 17c.
forewarn (v.) Look up forewarn at Dictionary.com
early 14c., from fore- + warn. Related: Forewarned; forewarning.
foreword (n.) Look up foreword at Dictionary.com
1842, from fore- + word (n.); perhaps a loan-translation of German Vorwort "preface," modeled on Latin praefatio "preface."
forfeit (n.) Look up forfeit at Dictionary.com
c.1300, "misdeed," from Old French forfait "crime, punishable offense" (12c.), originally past participle of forfaire "transgress," from for- "outside, beyond" (from Latin foris; see foreign) + faire "to do" (from Latin facere; see factitious). Translating Medieval Latin foris factum. Sense shifted mid-15c. from the crime to the penalty: "something to which the right is lost through a misdeed." As an adjective from late 14c., from Old French forfait.
forfeit (v.) Look up forfeit at Dictionary.com
c.1300, "to lose by misconduct;" see forfeit (n.). Related: Forfeited; forfeiting.
forfeiture Look up forfeiture at Dictionary.com
mid-14c., from Old French forfaiture "crime, transgression; penalty for committing a crime," from forfait (see forfeit).
forfend (v.) Look up forfend at Dictionary.com
also forefend, late 14c., "to protect, prohibit; to avert, prevent," a hybrid from for- + fend, from Latin defendere "to ward off."
forgave Look up forgave at Dictionary.com
past tense of forgive (q.v.).
forge (n.) Look up forge at Dictionary.com
late 14c., "a smithy," from Old French forge (12c.) "forge, smithy," earlier faverge, from Latin fabrica "workshop," from faber (genitive fabri) "workman in hard materials, smith" (see fabric). As the heating apparatus itself, from late 15c.
forge (v.2) Look up forge at Dictionary.com
1610s, "make way, move ahead," of unknown origin, perhaps an alteration of force (v.), but perhaps rather from forge (n.), via notion of steady hammering at something. Originally nautical, in reference to vessels.
forge (v.1) Look up forge at Dictionary.com
c.1300, "to make, shape, create," from Old French forgier, from Latin fabricari "to frame, construct, build," from fabrica "workshop" (see forge (n.)). Meaning "to counterfeit" is early 14c. Related: Forged; forging.
forger (n.) Look up forger at Dictionary.com
late 14c., "a maker, a smith," agent noun from forge (v.). Meaning "a counterfeiter" is from 1550s. A Middle English word for "a forger" was falsarie (mid-15c.).
forgery (n.) Look up forgery at Dictionary.com
1570s, "a thing made fraudulently," from forge (n.) + -ery. Meaning "act of counterfeiting" is 1590s.
forget (v.) Look up forget at Dictionary.com
Old English forgietan, from for-, used here with negative force, "away, amiss, opposite" + gietan "to grasp" (see get). To "un-get," hence "to lose" from the mind. A common Germanic construction (compare Old Saxon fargetan, Old Frisian forjeta, Dutch vergeten, Old High German firgezzan, German vergessen "to forget"). The literal sense would be "to lose (one's) grip on," but that is not recorded in any Germanic language. Related: Forgetting; forgot; forgotten.
forget-me-not (n.) Look up forget-me-not at Dictionary.com
the flowering plant Myosotis palustris, 1530s, from Old French ne m'oubliez mye; in 15c. the flower was supposed to ensure that those wearing it should never be forgotten by their lovers. Similar loan-translations took the name into other languages, such as German Vergißmeinnicht, Swedish forgätmigej, Hungarian nefelejcs, Czech nezabudka.
forgetful (adj.) Look up forgetful at Dictionary.com
late 14c., from forget + -ful. Related: Forgetfully; forgetfulness.
forgettable (adj.) Look up forgettable at Dictionary.com
1827, from forget + -able. First attested in a translation from German by Carlyle.
forgivable (adj.) Look up forgivable at Dictionary.com
1540s, from forgive + -able.
forgive (v.) Look up forgive at Dictionary.com
Old English forgiefan "give, grant, allow; forgive," also "to give up" and "to give in marriage;" from for- "completely" + giefan "give" (see give).

The modern sense of "to give up desire or power to punish" is from use of the compound as a Germanic loan-translation of Latin perdonare (such as Old Saxon fargeban, Dutch vergeven, German vergeben, Gothic fragiban; see pardon (v.)). Related: Forgave; forgiven; forgiving.
forgiveness (n.) Look up forgiveness at Dictionary.com
Old English forgiefnes "pardon, forgiveness, indulgence;" see forgive + -ness.
forgiving (adj.) Look up forgiving at Dictionary.com
"inclined to forgive," 1680s, from present participle of forgive. Related: Forgivingness.
forgo (v.) Look up forgo at Dictionary.com
"to relinquish," Old English forgan "go away, pass over, leave undone," from for- "away" + gan "go" (see go). Related: Forgoing; forgone.
forgotten (adj.) Look up forgotten at Dictionary.com
early 15c., past participle adjective from forget.
fork (n.) Look up fork at Dictionary.com
Old English forca "forked instrument used by torturers," a Germanic borrowing (cognate with Old Norse forkr) from Latin furca "pitchfork; fork used in cooking," of uncertain origin.

Table forks were not generally used in England until 15c. The word is first attested in this sense in English in a will of 1463, probably from Old North French forque (Old French furche, Modern French fourche), from the Latin word. Of rivers, from 1753; of roads, from 1839.
fork (v.) Look up fork at Dictionary.com
"to divide in branches, go separate ways" (early 14c.), from fork (n.). Related: Forked; forking. The slang verb phrase fork up (or out) "give over" is from 1831.
forkful (n.) Look up forkful at Dictionary.com
1640s; see fork (n.) + -ful.
forklift (n.) Look up forklift at Dictionary.com
also fork-lift (truck), 1946, from fork (n.) + lift (n.).
forlorn (adj.) Look up forlorn at Dictionary.com
mid-12c., forloren "disgraced, depraved," past participle of obsolete forlesan "be deprived of, lose, abandon," from Old English forleosan "to lose, abandon, let go; destroy, ruin," from for- "completely" + leosan "to lose" (see lose). In the Mercian hymns, Latin perditionis is glossed by Old English forlorenisse.

Sense of "forsaken, abandoned" is 1530s; that of "wretched, miserable" first recorded 1580s. A common Germanic compound (cognates: Old Saxon farilosan, Old Frisian urliasa, Middle Dutch verliesen, Dutch verliezen, Old High German virliosan, German verlieren, Gothic fraliusan "to lose").

Commonly in forlorn hope (1570s), which is a partial translation of Dutch verloren hoop, in which hoop means "troop, band," literally "heap," and the sense of the whole phrase is of a suicide mission. The phrase is usually used incorrectly in English, and the misuse has colored the sense of forlorn. Related: Forlornly; forlornness.
form (n.) Look up form at Dictionary.com
early 13c., from Old French forme "physical form, appearance, pleasing looks; shape, image," from Latin forma "form, contour, figure, shape; appearance, looks' model, pattern, design; sort, kind condition," origin unknown. One theory holds that it is from Greek morphe "form, beauty, outward appearance" (see Morpheus) via Etruscan [Klein]. Sense of "behavior" is first recorded late 14c. Meaning "a document with blanks to be filled in" is from 1855.
form (v.) Look up form at Dictionary.com
c.1300, from Old French fourmer, from Latin formare, from forma "form, contour, figure, shape" (see form (n.)). Related: Formed; forming.
formable (adj.) Look up formable at Dictionary.com
late 14c., from form (v.) + -able.
formal (adj.) Look up formal at Dictionary.com
late 14c., from Old French formel (13c.) and directly from Latin formalis, from forma (see form (n.)). As a noun, c.1600 (plural) "things that are formal;" as a short way to say formal dance, recorded by 1906, U.S. college students.
formaldehyde (n.) Look up formaldehyde at Dictionary.com
pungent gas formed by oxidation of methyl alcohol, 1869, a contraction of formic aldehyde; see formic + aldehyde. Discovered in 1863 by German chemist August Wilhelm von Hofmann (1818-1892).
formalism (n.) Look up formalism at Dictionary.com
1840, "strict adherence to prescribed forms," from formal + -ism. Attested from 1943 in reference to the Russian literary movement (1916-30). Related: Formalist; formalistic.
formality (n.) Look up formality at Dictionary.com
1530s, "agreement as to form," from Middle French formalité (15c.) or directly from Latin formalis "formal" (see formal). Originally "literary form;" meaning "something done for the sake of form" is from 1590s. Related: Formalities.
formalize (v.) Look up formalize at Dictionary.com
1590s, from formal + -ize. Related: Formalized; formalizing.
formally (adv.) Look up formally at Dictionary.com
c.1400, "in good form," from formal + -ly (2). Meaning "in prescribed or customary form" is from 1560s.
format (v.) Look up format at Dictionary.com
used chiefly of computers, 1964, from format (n.). Related: Formatted; formatting.
format (n.) Look up format at Dictionary.com
1840, via French format (18c.), ultimately from Modern Latin liber formatus "a book formed" (in such and such a way), referring to shape, size; from past participle of formare "to form" (see form (v.)).