fitness, n. becomingness, appropriateness, competency, qualification, congruity, eligibility.

fitting, a. suitable, proper, fit, befitting.

five, n. cinque, quintuplet, quintette; quintuplets.  Associated words:  quinary, quintuple, quintuplicate, quincunx.

five-angled, a. pentagonal.

five-angled figure. pentagon, pentahedron.

five cents. nickel.

fivefold, a. quintuple.

five languages.  Associated Word:  pentaglot.

five-sided, a. pentagonal, pentahedral.

five years. quinquennium, lustrum.  Associated Words:  quinquennial, quinquennially.

fir, v. mend, repair, restore, adjust; rivet, fasten; settle, fasten, establish, implant, define.

fix, n. (Colloq.) dilemma, predicament, plight, quandary.  Antonyms:  extrication, release.

fixed, a. immovable, established, stable, firm, unchangeable steadfast, stereotyped.

fixings, n. pl. (Colloq.) embellishments, trimmings.

fizzle, n. (Colloq.) failure, fiasco.

flabbergast, v. (Jocular) astonish, amaze, surprise, dumfound.

flabbergastation, n. (Jocular) astonishment, amazement.

flabbiness, n. flaccidity, limpness.

flabby, a. yielding, limp, soft, flaccid.  Antonyms:  firm, stiff, rigid.

flag, n. colors, standard, banner, gonfalon, pennon, pennant, ensign, guidon, streamer, banderole; iris, fleur-de-luce.  Associated words:  furl, unfurl.

flagrant, a. glowing, flaming, ardent; atrocious, heinous, wicked.

flake, n. film, flock, lamina, scale.

flame, n. blaze, fire; love, sweetheart.  Associated Words:  lambent, flamineous, flammiferous, flammivomous, flambage.

flame, v. blaze.  Antonym:  smolder.

flameless a. aphlogistic.

flaming, a. blazing, afire, flagrant; dazzling, brilliant; ardent, passionate.

flare, v. flicker, flutter; dazzle, blaze, glare; flaunt.

flare, n. glare, flicker.

flare-up, n. (Colloq.) passion, anger, outburst.

flash, n. gleam, glare, coruscation.

flash, v. glitter, gleam, glisten, coruscate, sparkle.

flash, n. instant, moment.

flashy, a. dazzling, coruscant; gaudy, tawdry, meretricious showy.

flask, n. betty, matrass, bolthead.

flat, a. level, even, plane, smooth; prostrate, prone; stale, insipid, vapid, tasteless, unsavory, unpalatable, mawkish; peremptory, unqualified, positive; spatulous, spatulate; sonant, vocal.  Antonyms:  convex, concave, warped, cambered, undulating, protuberant, projecting.

flat, n. lowland, champaign; floor, suite.

flatboat, n. punt.

flatfoot, n. splayfoot.

flatfooted, a. splayfooted; (Slang) determined, resolute, unwavering, firmfooted.

flatiron, n. sadiron.

flatnosed, a. simous.