- powerlessness, impotence, impotency - the quality of lacking strength or power; being weak and feeble
--1 is a kind of quality
--1 has particulars:helplessness, weakness, impuissance; unpersuasiveness; uninterestingness; paper tiger; ineffectiveness, ineffectualness, ineffectuality - impotence, impotency - an inability (usually of a male) to copulate
--2 is a kind of sterility, infertility
--2 has particulars: erectile dysfunction, male erecticle dysfunction, ED