Commonly Confused Words In English start on letter F
and How to Use Them

fair, fare fall, autumn farther, further favor, favour favorite, favourite favour, favor favourite, favorite faze, phase fed, feed feed, fed fewer, less fiancé, fiancée fiancée, fiancé fiber, fibre fiction, nonfiction figuratively, literally fillet, filet firsthand, first-hand fish, fishes fishes, fish fit, fitted flair, flare flagrant, blatant flammable, inflammable flautist, flutist flesh out, flush out flier, flyer flies, flys flounder, founder flu, cold flush out, flesh out flutist, flautist flys, flies follow up, followup followup, follow up foolproof, fullproof forego, forgo foreword, forward formulas, formulae forth, fourth forgo, forego former, latter forty, fourty foul, fowl founder, flounder fourth, forth fourty, forty fowl, foul free reign, free rein free rein, free reign freshman, freshmen freshmen, freshman fulfil, fulfill fulfill, fulfil fullproof, foolproof funner, more fun funnest, most fun few, a few formally, formerly faint, feint forward, foreword flour, flower flaunt, flout familiar, familial fallible, fallacious falseness, falsehood feet, feat finally, finely fined, find flew, flu floe, flow flush, blush font, fount fortunate, fortuitous frenetic, frantic full, fulsome flare, flair flyer, flier feel, touch frog, toad fructose, glucose fruit, vegetable fission, fusion fixed cost, variable cost fox, wolf formerly, formally