The Collaborative International Dictionary
flaccid \flac"cid\ (fl[a^]k"s[i^]d or fl[a^]s"s[i^]d), a. [L. flaccidus, fr. flaccus flabby: cf. OF. flaccide.] Yielding to pressure for want of firmness and stiffness; soft and weak; limber; lax; drooping; flabby; as, a flaccid muscle; flaccid flesh.
Religious profession . . . has become flacced.
--I.
Taylor.
-- flac"cid*ly (fl[a^]k"s[i^]d*l[y^] or
fl[a^]s"s[i^]d*l[y^]), adv. -- flac"cid*ness, n.
Wiktionary
adv. In a flaccid manner
Usage examples of "flaccidly".
It sagged flaccidly, chest and stomach sinking toward the ground as if that part of him were melting in the sun.
Their thighs and shaven groins and the nether lips that flaccidly protruded there were all mucously slimy.
Its mouth hung flaccidly, teeth still gleaming wickedly in the reemerging sunlight.