Synonyms and related words :
break up, canker, corrupt, crumble, crumble into dust, decay, decompose, disintegrate, fall into decay, fall to pieces, fester, gangrene, go bad, go to pieces, matter, mildew, mold, molder, mortify, necrose, putrefy, putresce, rankle, ripen, rot, run, sphacelate, spoil, weep