slag

to express one's unfavorable opinion of the worth or quality of London reviewers slagged off the new play for being another kitchen-sink drama Synonyms blame, censure, condemn, denounce, dis (also diss) [slang], dispraise, fault, knock, pan, reprehend, criticize [chiefly British]Related Words skewer, tweak; assail, attack, blast, clobber, slam, slash; nick (at), snipe (at); beef, bellyache, bitch, carp, cavil, complain, crab, croak, fuss, gripe, grouse, growl, grumble, kick, kvetch, moan, murmur, mutter, niggle, quibble, whine; admonish, chide, drub, rebuke, reprimand, reproach, reprove; berate, castigate, crucify, excoriate, flay, gibbet, hammer, keelhaul, lambaste (or lambast), lash, pillory, scold, upbraid; bad-mouth, belittle, decry, deride, discommend, disparage, put downNear Antonyms approve, commend, endorse (also indorse), recommend, sanctionAntonyms extol (also extoll), laud, praise