fodder.noun
a consumable, often inferior item or resource that is in demand and usually abundant supply (the bulk of the population is often considered fodder by those governing them); raw material, as for artistic creation; feed for livestock, especially coarsely chopped hay or straw
fodder, foddered, foddering, fodders.transitive verbs
to feed with fodder

Fourier analysis.noun
mathematics: the approximation of a function through the application of a Fourier series to periodic data
Fourier series.noun
Mathematics.-.an infinite series whose terms are constants multiplied by sine and cosine functions and that can, if uniformly convergent, approximate a wide variety of functions

fray.noun
a scuffle; a brawl; a heated dispute or contest
fray, frayed, fraying, frays.transitive verbs
to alarm; frighten; to drive away
meaning 2.fray, frayed, fraying, frays.verbs
transitive verb use.to strain; chafe (repeated noises that fray the nerves); to wear away (the edges of fabric, for example) by rubbing
intransitive verb use.to become worn away or tattered along the edges
fray also.noun

fool.noun
word history denotes a windbag or an airhead
one who is regarded as deficient in judgment, sense, or understanding; one who acts unwisely on a given occasion (I was a fool to have refused the job); one who has been tricked or made to appear ridiculous; a dupe (they made a fool of me by pretending I won the award);
fool, fooled, fooling, fools.verbs
transitive verb use.to deceive or trick; dupe.(trying to learn how to fool a trout with a little bit of floating fur and feather); to confound or prove wrong; surprise, especially pleasantly (we were sure they would fail, but they fooled us)
intransitive verb use.to speak or act facetiously or in jest; joke (I was just fooling when I said you couldn't have any of my candy); to feign; pretend (He said he had a toothache but it turned out he was only fooling); to engage in idle or frivolous activity; to toy, tinker, or mess (shouldn't fool with matches);
fool.adjective
foolish; stupid (off on some fool errand or other)
phrasal verbs.fool around; to engage in idle or casual activity; putter (was fooling around with some figures in hopes of balancing the budget); to engage in frivolous activity; make fun

furious.adjective
full of or characterized by extreme anger; raging; suggestive of extreme anger in action or appearance; fierce; angry
furiously.adverb

fed up.adjective
unable or unwilling to put up with something any longer (she was fed up with their complaints. I resigned from the company because I was fed up)

folly.noun,.plural.follies
lack of good sense, understanding, or foresight; an act or instance of foolishness (regretted the follies of his youth); a costly undertaking having an absurd or ruinous outcome

familiar.adjective
often encountered or seen; common; having fair knowledge; acquainted.(was familiar with those roads); taking undue liberties; presumptuous.(students should not try to be familiar in their behavior toward an instructor
familiarly.adverb

familiarity.noun,.plural.familiarities.(pronounce 'fam mil yare ity')
considerable.acquaintance with; established friendship; intimacy; the quality or condition of being familiar

familiarize, familiarized, familiarizing, familiarizes.transitive verbs
to make known, recognized, or familiar; to make acquainted with
familiarization, familiarizer.nouns

froward.adjective
stubbornly.contrary and disobedient; obstinate
frowardly.adverb
frowardness.noun

flagrant.adjective
conspicuously bad, offensive, or reprehensible.(a flagrant miscarriage of justice; flagrant cases of wrongdoing at the highest levels of government); blatant
flagrancy or flagrance.noun
flagrantly.adverb

fluorosis.noun
an abnormal condition caused by excessive intake of fluorine, as from fluoridated drinking water, characterized chiefly by mottling of the teeth
fluorotic.adjective

frequency.noun,.plural.frequencies
the property or condition of occurring at frequent.intervals; all matter is sustained by the invisible frequency signature that supports its specific.composition
Mathematics and Physics.-.the number of times a specified phenomenon occurs within a specified interval, as: the number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable, and, the number of complete cycles of a periodic process occurring per unit of time, and, the number of repetitions per unit time of a complete waveform, as of an electric current

fanfare.noun
a spectacular public display; music; a loud flourish of brass instruments, especially trumpets

frisky, friskier, friskiest.adjectives
energetic, lively, and playful (a frisky kitten)
friskily.adverb
friskiness.noun

frolicsome.adjective
full of high spirited fun; frisky and playful

fume.noun
a state of resentment or vexation; vapor, gas, or smoke, especially if irritating, harmful, or strong; strong or acrid odor
fume, fumed, fuming, fumes.verbs
transitive verb use.to subject to or treat with fumes; to give off in or as if in fumes
intransitive verb use.to feel or show resentment or vexation; to emit fumes; to rise in fumes

foul play.noun
criminal violence or murder (examples - citizens may have been  victims of foul play when a government enacts laws affecting them without a majority input; unfair or dishonest acts (example - the corporate deal with the government has brought cries/accusations of foul play {claims that there have been unfair or dishonest acts} from its competitors)

flaunt, flaunted, flaunting, flaunts.verbs
transitive use.to exhibit ostentatiously or shamelessly (flaunts his knowledge; show
intransitive use.to parade oneself ostentatiously; show oneself off; to wave grandly (pennants flaunting in the wind)
flaunter.noun
flauntingly.adverb

fit, fitted, fitted, fitting, fits.verbs
transitive verb use.to be the proper size and shape for (these shoes fit me); to cause to be the proper size and shape (the tailor fitted {or fit} the trousers by shortening them); to measure for proper size (she fitted me for a new jacket); to be appropriate to; suit.(music that fits your mood); to be in conformity or agreement with (observations that fit the theory nicely); to make suitable; adapt.(fitted the shelves for large books); to make ready; prepare (specialized training fitted her for the job); to equip; outfit (fit out a ship); to provide a place or time for (you can't fit any more toys in the box; the doctor can fit you in today); to insert or adjust so as to be properly in place (fit a handle on a door)
intransitive verb use.to be the proper size and shape; to be suited; belong (doesn't fit in with these people); to be in harmony; agree (his good mood fit in with the joyful occasion)
fit, fitter, fittest.adjectives
suited, adapted, or acceptable for a given circumstance or purpose (not a fit time for flippancy); appropriate; proper (do as you see fit); physically sound; healthy (keeps fit with diet and exercise)
fit.noun
the state, quality, or way of being fitted; the manner in which clothing fits (a jacket with a tight fit); the degree of precision with which surfaces are adjusted or adapted to each other in a machine or collection of parts
fit to be tied.idiom
frustrated about something
fitly.adverb
fitter.noun

fitful.adjective
occurring in or characterized by intermittent bursts, as of activity; irregular; periodic
fitfully.adverb
fitfulness.noun