Synonyms of decaying in English:

decaying


See US English definition of decaying

See UK English definition of decaying

adjective

1‘the decaying bodies of fish filled the pond’

SYNONYMS
decomposing, decomposed, rotting, rotten, putrescent, putrid, bad, off, spoiled, spoilt, perished
mouldy, mouldering, festering, fetid, stinking, smelly, rancid, rank
maggoty, worm-eaten, wormy, flyblown

2‘a visibly decaying city’

SYNONYMS
declining, degenerating, dying, waning, crumbling, collapsing
run down, broken-down, tumbledown, ramshackle, shabby, battered, decrepit
in decline, on the decline, in ruins, in disrepair, in a state of disrepair, falling apart, falling to pieces
informal on its last legs, on the way out