quash

douse (also dowse), extinguish, put out, quench

smother, stifle, strangle, throttle

annihilate, decimate, demolish, desolate, destroy, devastate, nuke, rub out, ruin, smash, waste, wreck

exterminate, obliterate, wipe out

conquer, dominate, overcome, overpower, overwhelm, subdue, subjugate, vanquish

countermand, override, overrule, overturn, veto

abort, call, call off, drop, recall, retract, reverse, revoke, suspend, withdraw

ban, enjoin, forbid, outlaw, prohibit

disallow, dismiss, reject

annihilate, break down, eliminate, eradicate, erase, liquidate, remove, throw out, write off