fiber, n. 1. filament, fibril, tendril, strand, thread; web, cobweb, gossamer.
2. character, nature, quality, stripe, streak, grain; constitution, composition, makeup, mold, cast, frame; spirit, disposition, temperament.
fibrous, adj. threadlike, stringy, wiry, fibroid, filamentous, filamentary, filiform, fibrillar, fibrilliform, fibrillose.
fickle, adj. 1. capricious, whimsical, fanciful, flighty, giddy, dizzy, frivolous, facetious; changeable, variable, mutable, moody, unpredictable, unaccountable; volatile, mercurial, quicksilver; impulsive, impetuous, erratic, spasmodic, fitful, irregular.
2. indecisive, undecided, uncertain, unsure, irresolute, unresolved; wishy-washy, blowing hot and cold, wavering, fluctuating, vacillating, shilly-shallying.
3. inconstant, unfaithful, faithless, disloyal, unsteady, unstable, unsteadfast; tricky, slippery, shifty, double-dealing, treacherous, perfidious; unreliable, undependable, untrustworthy, fly-by-night, fickle-minded; unrestrained, undisciplined, uncontrolled, fast and loose.
fickleness, n. 1. capriciousness, fancifulness, giddiness, facetiousness; changeableness, mutability, moodiness; impulsiveness, impetuosity, erraticalness.
2. indecision, uncertainty, irresolution, wishy-washiness.
3. inconstancy, unfaithfulness, disloyalty; treacherousness, perfidiousness, shiftiness; unreliability, undependability, untrustworthiness, fickle-minded-ness.
fiction, n. 1. story, tale, romance, novel, antinovel, Archaic, gest; myth, legend, fable, parable, allegory, saga, epic; mystery, Inf. whodunit, Inf. thriller, Inf. shocker; science-fiction story, sci-fi story, Inf. space opera.
2. fabrication, invention, concoction, tall tale or story, cock and bull story, fish story, Inf. song and dance; lie, prevarication, falsehood, fib, canard, Inf. whopper; fancy, whimsy, Archaic, maggot, crotchet; fantasy, vapor, imagining, hallucination, figment of the imagination.
fictitious, adj. 1. feigned, simulated, pretended, affected, assumed, put-on, faked; disingenuous, insincere, supposititious; false, spurious, counterfeit, sham, ungenuine, unauthentic, pseudo, bogus, fake, Inf. phony; artificial, synthetic, made out of whole cloth.
2. fabricated, invented, manufactured, concocted, made-up, trumped-up; imaginary, fictive, unreal, non-factual, make-believe, figmental, fictional; fabulous, legendary, mythical, mythological.
fiddle, n. 1. violin, viol, viola, cello; crowd or crwth.
2. fit as a fiddle healthy, in good health, sound, fit, robust, in fine fettle, Inf. in shape or in good shape. -v. 3. twiddle; fuss with, fool with, toy with, play with, fidget with, finger; (of a dial, knob, etc.) adjust, tune.
4. trifle, toy, play, Inf. mess around, Inf. monkey around; dally, dillydally, dawdle, Inf. diddle.
fiddle-de-dee, interj. nonsense, stuff and nonsense, balderdash, hogwash, pish, pish and tush, pshaw, humbug, bah, poppycock, fiddle-faddle, tommyrot, Inf. rot; All Sl. garbage, bunk, bosh, Brit, tosh, baloney, bushwa, bilge water, horsefeathers, moonshine, Vulgar, bullshit.
fiddle-faddle, n. Informal, nonsense, balderdash, bunkum. See - nonsense (def. 2).