FORTITUDE—endurance, resolution, fearlessness, dauntlessness. (Weakness.)
FORTUNATE—lucky, happy, auspicious, successful, prosperous. (Unfortunate.)
FORTUNE—chance, fate, luck, doom, possession, destiny, property, riches.
FOSTER—cherish, nurse, tend, harbor. (Neglect.)
FOUL—impure, nasty, filthy, dirty, unclean, defiled. (Pure, clean.)
FRACTIOUS—cross, captious, petulant, splenetic, touchy, testy, peevish, fretful. (Tractable.)
FRAGILE—brittle, frail, delicate, feeble. (Strong.)
FRAGMENTS—pieces, scraps, leavings, remnants, chips, remains.
FRAILTY—weakness, failing, foible, imperfection, fault, blemish. (Strength.)