Fitful. Variable, irregular, impulsive, spasmodic, unstable, fickle, whimsical, fanciful, capricious, fantastic, humorsome, odd; eventful, checkered; restless, inconstant, mutable, desultory, unequal.
Ant. Regular, equable, orderly, systematic, calculable.
Fix. Set, place, establish, plant, fasten, make firm; attach, tie, connect; determine, define, appoint, limit, settle; rivet, direct steadily, adjust; solidify, consolidate; link, locate, root, secure; decide.
Ant. Displace, unsettle, remove, disarrange, uproot, transplant, transfer, weaken, shake, disestablish, reverse, disturb, change, unfix.
Flaccid. Limber, lax, drooping, flabby, soft, limp, yielding, relaxed, inelastic, pendulous.
Ant. Firm, braced, plump, muscular, chubby, brawny, vigorous, strong, powerful.
Flag, n. Flagstone; streamer, banner, colors, standard, pennon, pennant, ensign, gonfalon.
Flag, v. Hang loose, droop; languish, faint, decline, pine, sink, succumb, grow weak, become dejected; pall, grow stale, lose interest, weary, tire; give in.
Ant. Freshen, flourish; persevere, hold, brace up, struggle, persist, battle, recruit, recover.
Flagitious. Atrocious, heinous, flagrant, scandalous, villainous, corrupt, abandoned, profligate; enormous, monstrous, disgraceful, nefarious, aggravated.