adj. 25B6; adjective
decaying fish : DECOMPOSING, decomposed, rotting, rotten, putrescent, putrid, bad, off, perished; mouldy, festering, fetid, rancid, rank; maggoty, wormy, flyblown.
a decaying city : DECLINING, degenerating, dying, crumbling; run down, tumbledown, ramshackle, shabby, decrepit; in decline, in ruins; informal on the way out.