Wiktionary
putrescently
adv. In a putrescent manner.
Usage examples of "putrescently".
Even so, it took all of Loren's willpower to stifle a cry of sheer terror when what seemed to be a wall of brilliantly - no, putrescently - pink flesh emerged from the sea.
So little is known of what went on beneath the surface - so little, yet such a ghastly festering as it bubbles up putrescently in occasional ghoulish glimpses.