MDBG Mobile Chinese English Dictionary (iPhone, Android, Windows Phone)

腐化	fǔ huà	to rot / to decay / to become corrupt
腐朽	fǔ xiǔ	rotten / decayed / decadent / degenerate
凋零	diāo líng	withered / wilted / to wither / to fade / to decay
蜕变	tuì biàn	to transform / to morph / to degenerate / metamorphosis / transmutation / transformation / decay / degeneration
虫牙	chóng yá	tooth decay; dental caries / decayed tooth; rotten tooth
衰	shuāi	(bound form) to decay; to decline; to wane
腐	fǔ	decay / rotten
龋齿	qǔ chǐ	tooth decay; dental caries / decayed tooth; rotten tooth
陨落	yǔn luò	to fall down / to decay / to fall from the sky / to die
龋	qǔ	decayed teeth / dental caries
蛀牙	zhù yá	tooth decay; dental caries / decayed tooth; rotten tooth
衰败	shuāi bài	to decline / to wane / to decay / to deteriorate
颓	tuí	to crumble / to collapse / to decline / to decay / decadent / dejected / dispirited / balding
腓	féi	calf of leg / decay / protect
流水不腐，户枢不蠹	liú shuǐ bù fǔ , hù shū bù dù	lit. flowing water does not rot, nor a door-hinge rust (idiom) / fig. constant activity prevents decay
糜烂	mí làn	dissipated / rotten / decaying
衰变	shuāi biàn	radioactive decay
颓败	tuí bài	to decay / to decline / to become corrupt
衰朽	shuāi xiǔ	decaying / decrepit / aged and crumbling
防龋	fáng qǔ	to prevent tooth decay / anti-caries