All terms in this list:

factious: causing disagreement

fastidious: hard to please; fussy

fatuous: foolish, insane

fecund: fertile, productive

ferret: (noun) a small animal of the weasel family
(verb) to search to drive out

fervent: eager; earnest

fetish: an object the receives respect or devotion

finesse: diplomacy; tact; artful management

fiscal: pertaining to finances

fissure: an opening; a grove; a split

flaccid: flabby

flagellate: to whip; to lash

flaunt: to show off

flout: to ridicule; to show contempt for

foment: to stir up; to incite