"flaccid" in the adjective sense
1. flaccid
drooping without elasticity wanting in stiffness
"a flaccid penis"
2. soft, flabby, flaccid
out of condition not strong or robust incapable of exertion or endurance
"he was too soft for the army"
"flabby around the middle"
"flaccid cheeks"
Source: WordNet® (An amazing lexical database of English)
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