| facetious | humorous funny jocular |
| facile | easily done |
| fagged | too tired, exhausted |
| fallacious | based on error |
| falter | waver/move in an uncertain manner |
| fatuous | without sense foolish self-satisfaction |
| fawn | young deer try to win smb's favor |
| feckless | lacking purpose or vitality ineffective careless |
| fecund | fertile |
| feint | pretend |
| felicitous | apt suitably expressed well chosen apropos |
| felon | person guilty of murder |
| ferment | substance become excited |
| ferocity | savage cruelty |
| ferret | discover by searching search |
| fervid | showing earnest feeling |
| fervor | warmth of feelings earnestness |
| fetid | stinking |
| fetter | to shackle put in chains |
| feud | bitter quarrel over a long period of time |
| fidelity | loyalty accuracy |
| fidget | move restlessly make nervous |
| figurehead | carved image on the prow of a ship |
| finesse | delicate way of dealing with a situation |
| finical | too fussy about food clothing etc. |
| finicky | finical |
| fission | splitting or division (esp. of cells) |
| fixate | stare at |
| flak | criticism/anti-aircraft guns |
| flamboyant | brightly colored florid |
| flaunting | show off complacently |
| flax | pale yellow (hair) a plant |
| fledged | able to fly trained experienced |
| fleet | number of ships quick- moving |
| flinch | draw move back wince |
| flop | fail/move/fall clumsily |
| florid | very much ornamented naturally red (e.g.. of face) |
| flout | reject mock to go against (as in going against tradition) |
| fluke | lucky stroke |
| fluster | make nervous or confused |
| foible | defect of character (a person is wrongly proud) |
| foil | prevent from carrying out contrast |
| foment | put something warm (to lessen the pain) |
| foolproof | incapable of failure or error |
| foppish | like a man who pays too much attention to his clothes |
| forage | food for horses and cattle |
| forbear | refrain from be patient ancestor |
| forbearance | patience willingness to wait |
| ford | shallow place in a river (to cross) |
| forestall | prevent by taking action in advance preempt |
| forfeit | suffer the loss of something |
| forge | workshop for the shaping of metal to shape metal lead |
| forgery | counterfeit |
| forswear | renounce disallow repudiate |
| foster | nurture care for |
| fracas | noisy quarrel |
| fragile | easily injured broken or destroyed |
| fragrant | sweet-smelling |
| frantic | wildly excited with joy pain anxiety |
| frenetic | frantic frenzied |
| fret | worry irritation wear away |
| fringe | edge ornamental border part of hair over the forehead |
| froward | intractable not willing to yield or comply stubborn |
| frugal | careful economical |
| fulmination | bitter protest |
| fulsome | disgusting offensive due to excessiveness |
