Verb defeat, suppress
Synonyms: annihilate, conquer, crush, extinguish, hush up, kill, overcome, overpower, put down, put the lid on, queer, quench, shut down, silence, sit on, stamp out, stifle, stop, subdue, subjugate, vanquish
Antonyms: succeed, win
Verb alleviate, calm
Synonyms: allay, appease, assuage, check, compose, deaden, dull, ease, mitigate, moderate, mollify, pacify, quiet, reduce, silence, soothe, still
Antonyms: aggravate, agitate, disturb, irritate, perturb