| Word |
Definition |
| Flippant | lacking proper seriousness |
| Flit | to fly; to dart lightly; to pass swiftly by |
| Floe | mass of floating ice |
| Flora | plants of a region or era |
| Florid | ruddy; reddish; rosy; flowery <florid complexion> |
| Flotsam | drifting wreckage |
| Flounder | to struggle and thrash about; to proceed clumsily or falter |
| Flourish | to grow well; to prosper; to make sweeping gestures |
| Flout | to reject; to mock |
| Fluctuate | to waver; to shift |
| Fluency | smoothness of speech |
| Fluke | unlikely occurrence; stroke of fortune |
| Fluster | to confuse |
| Fluted | having vertical parallel grooves (as in a pillar) |
| Flux | flowing; series of changes |
| Fodder | coarse food for cattle, horses, etc |
| Foible | weakness; slight fault |
| Foil | contrast |
| Foil | to defeat; to frustrate |
| Foist | to insert improperly; to palm off |
| Foliage | masses of leaves |
| Foment | to stir up; to instigate |
| Foolhardy | rash |
| Foppish | vain about dress and appearance |
| Foray | a raid; a quick and sudden attack |
| Forbearance | patience |
| Ford | place where a river can be crossed on foot |
| Forebears | ancestors |
| Foreboding | premonition of evil |
| Forensic | suitable to debate or courts of law |
| Foreshadow | to give an indication beforehand; portend; prefigure |
| Foresight | ability to foresee future happenings; prudence |
| Forestall | to prevent by taking action in advance |
| Forgo | to give up; to do without |
| Forlorn | desolate or dreary; unhappy or miserable, as in feeling, condition, or appearance; sad and lonely; forsaken |
| Formality | meancing; threatening |
| Forsake | to desert; abandon; renounce |
| Forswear | to renounce; to abandon |
| Forte | strong point or special talent |
| Forthright | straightforward; direct; frank |
| Fortitude | bravery; courage |
| Fortuitous | accidental; by chance |
| Foster | to rear; to encourage |
| Founder | to fail completely; to sink |
| Founder | person who establishes (an org., business) |
| Fracas | a noisy, disorderly disturbance or fight; brawl, melee |
| Fractious | unruly |
| Frail | weak |
| Franchise | right granted by authority; right to vote; license to sell a product in a particular territory |
| Frantic | wild |
| Fraudulent | cheating; deceitful |
| Fraught | filled |
| Fray | brawl (noisy quarrel) |
| Frenetic | frenzied; frantic |
| Frenzied | madly excited |
| Fresco | painting on plaster (usually fresh) |
| Fret | to be annoyed or vexed |
| Friction | clash in opinion; rubbing against |
| Frieze | ornamental band on a wall |
| Frigid | intensely cold |
| Fritter | to waste |
| Frivolous | lacking in seriousness; self-indulgently care-free; relatively unimportant |
| Frolicsome | prankish; gay |
| Frond | fern leaf; palm or banana leaf |
| Fructify | to bear fruit |
| Frugality | thrift; economy |
| Fruition | bearing of bruit; fulfillment; realization |
| Frustrate | to thwart; to defeat |
| Fugitive | fleeting or transitory; roving (roaming or wandering) |
| Fulcrum | support on which a lever rests |
| Fulminate | to thunder; to explode |
| Fulsome | disgustingly excessive |
| Functionary | official |
| Fundamental | basic; primary; essential |
| Funereal | sad; solemn |
| Furor | frenzy; great excitement |
| Furtive | stealthy; sneaky <furtive glance> |
| Fusillade | simultaneous firing or outburst |
| Fusion | union; coalition |
| Futile | useless; hopeless; ineffectual |
| Gadfly | animal-biting fly; and irritating person |
| Gaffe | social blunder |
