Definition of flaccid

• lacking in strength or firmness or resilience; "flaccid muscles"; "took his lax hand in hers"; "gave a limp handshake"; "a limp gesture as if waving away all desire to know" G.K.Chesterton; "a slack grip"
• drooping without elasticity; wanting in stiffness; "a flaccid penis"
• 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"