F

fabricate v. To invent fancifully or falsely.
facet n. One of the small triangular plane surfaces of a diamond or other gem.
facetious adj. Amusing.
facile adj. Not difficult to do.
facilitate v. To make more easy.
facility n. Ease.
facsimile n. An exact copy or reproduction.
faction n. A number of persons combined for a common purpose.
factious adj. Turbulent.
fallacious adj. Illogical.
fallacy n. Any unsound or delusive mode of reasoning, or anything based on such reasoning.
fallible adj. Capable of erring.
fallow n. Land broken up and left to become mellow or to rest.
fanatic n. A religious zealot.
fanciless adj. Unimaginative.
fastidious adj. Hard to please.
fathom n. A measure of length, 6 feet.
fatuous adj. Idiotic
faulty adj. Imperfect.
faun n. One of a class of deities of the woods and herds represented as half human, with goats feet.
fealty n. Loyalty.
feasible adj. That may be done, performed, or effected; practicable.
federate v. To league together.
feint n. Any sham, pretense, or deceptive movement.
felicitate v. To wish joy or happiness to, especially in view of a coming event.
felicity n. A state of well-founded happiness.
fernery n. A place in which ferns are grown.
fervent adj. Ardent in feeling.
fervid adj. Intense.
fervor n. Ardor or intensity of feeling.
fete n. A festival or feast.
feudal adj. Pertaining to the relation of lord and vassal.
feudalism n. The feudal system.
fez n. A brimless felt cap in the shape of a truncated cone, usually red with a black tassel.
fiasco n. A complete or humiliating failure.
fiducial adj. Indicative of faith or trust.
fief n. A landed estate held under feudal tenure.
finesse n. Subtle contrivance used to gain a point.
flag-officer n. The captain of a flag-ship.
flagrant adj. Openly scandalous.
flection n. The act of bending.
fledgling n. A young bird.
flippant adj. Having a light, pert, trifling disposition.
floe n. A collection of tabular masses of floating polar ice.
fluctuate v. To pass backward and forward irregularly from one state or degree to another.
fluctuation n. Frequent irregular change back and forth from one state or degree to another.
flue n. A smoke-duct in a chimney.
flux n. A state of constant movement, change, or renewal.
foible n. A personal weakness or failing.
foist v. To palm off.
folio n. A sheet of paper folded once, or of a size adapted to folding once.
foppery n. Dandyism.
foppish adj. Characteristic of one who is unduly devoted to dress and the niceties of manners.
forbearance n. Patient endurance or toleration of offenses.
forby adv. Besides.
forecourt n. A court opening directly from the street.
forejudge v. To judge of before hearing evidence.
foreshore n. That part of a shore uncovered at low tide.
forebode v. To be an omen or warning sign of, especially of evil.
forecastle n. That part of the upper deck of a ship forward of the after fore-shrouds.
forego v. To deny oneself the pleasure or profit of.
foreordain v. To predetermine.
foreordination n. Predestination.
forerun v. To go before as introducing or ushering in.
forethought n. Premeditation.
forfend v. To ward off.
forgo v. To deny oneself.
formation n. Relative disposition of parts.
formidable adj. Difficult to accomplish.
forswear v. To renounce upon oath.
forte n. A strong point.
forthright adv. With directness.
fortitude n. Patient courage.
frantic adj. Frenzied.
fraudulence n. Deceitfulness.
fraudulent adj. Counterfeit.
fray v. To fret at the edge so as to loosen or break the threads.
freemason n. A member of an ancient secret fraternity originally confined to skilled artisans.
frigidarium n. A room kept at a low temperature for preserving fruits, meat, etc.
frivolity n. A trifling act, thought, saying, or practice.
frivolous adj. Trivial.
frontier n. The part of a nation's territory that abuts upon another country.
frowzy adj. Slovenly in appearance.
fruition n. Fulfillment.
fugacious adj. Fleeting.
fulcrum n. The support on or against which a lever rests, or the point about which it turns.
fulminate v. To cause to explode.
fulsome adj. Offensive from excess of praise or commendation.
functionary n. An official.
fundamental adj. Basal.
fungible adj. That may be measured, counted, or weighed.
furlough n. A temporary absence of a soldier or sailor by permission of the commanding officer.
further adj. More distant or advanced.
furtherance n. Advancement.
furtive adj. Stealthy or sly, like the actions of a thief.
futile adj. Of no avail or effect.