decayedEnglishOxford American Thesaurusdecayed adjective she discovered his decayed body: decomposed, decomposing, rotten, rotting, putrescent, putrid, bad, off, spoiled, spoilt, perished; moldy, moldering, mildewy, festering, fetid, stinking, smelly, rancid, rank; maggoty, worm-eaten, wormy, flyblown.