flaccid

adjectives

drooping without elasticity; wanting in stiffness

"a flaccid penis"

flaccid

is similar to

yielding readily to pressure or weight

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"

flabby, flaccid, soft

is derived from