destroy

[1]	demolish , destruct , tear/pull down , raze , wipe out , ravage , wreck , smash , ruin , break up/down , annihilate , crush , eradicate , extirpate , exterminate , devastate , commit mayhem , lay waste , vandalize , (Slang) (US) trash
[2]	ruin , ruin , do away with , end , make an end of , bring to an end , bring/put an end to , terminate , finish , kill
[3]	counteract , demolish , neutralize , nullify , annul , cancel (out) , reverse , stop , interfere with
[4]	disprove , put down , refute , confute , deny , contradict , negate , overturn , overthrow , ruin , spoil , undermine , weaken , enfeeble , devitalize , exhaust , disable , cripple