meliorate Antonyms

do damage ruin reduce raze queer quash prevent obstruct nix mar lower lessen labefy scotch sink add to the problem add fuel to the fire vandalize screw up break down worsen weaken vitiate upset undermine stop spoil injure impair hurt degrade deface decrease decline debase damage corrupt break blow block blight blemish demolish deplete hinder harm halt frustrate flaw exacerbate