Synonyms for complain

verb

1. To express an objection

   remonstrate, grumble, whine, find fault, disapprove, accuse, deplore, criticize, denounce, dissent, cavil, charge, bring charges, report adversely on, reproach, oppose, contravene, whimper, nag, fret, repine, protest, fuss, moan, growl, grump, murmur, mutter, make a fuss about, take exception to, object to, deprecate, enter a demurrer, demur, expostulate, carp, attack, refute, countercharge, air a grievance, lodge a complaint, howl, grouse*, kick*, bitch*, grouch*, gripe*, grunt*, beef*, bellyache*, crab*, squawk*, tattle*, kick up a fuss*, make noises about*, raise a howl*, raise a fuss*, make a stink*, moan and groan*, kvetch*; see also accuse, censure, oppose 1.

   Antonyms sanction, approve*, countenance.

2. To express grief

   grieve, lament, bemoan, bewail; see cry 1, mourn 1.