the world > action or operation > harm or detriment > disadvantage > uselessness > uselessness, vanity, or futility > [noun] > inefficacy > one who is (4)
Of a person: That does not effect the ends for which he exists; that is a failure. Also as n.
One who is frustrated or disappointed; an ineffectual person. rare.
A weak or ineffectual person; = wussy, n.