Synonyms and related words :
break down, break up, canker, corrupt, crumble, crumble into dust, decay, decompose, deteriorate, disintegrate, fall into decay, fall to pieces, fester, gangrene, go bad, go off, go to pieces, mildew, mold, molder, mortify, moulder, necrose, putresce, rankle, rot, sphacelate, spoil, suppurate, taint, turn