Powerlessness; incapacity. / Inability to copulate or beget children; sterility, erectile dysfunction, etc.

plural of impotence

lacking physical strength or vigor; weak / lacking in power, as to act effectively; helpless

a man who has erectile dysfunction / an impotent or powerless person

(dated) impotence

In an impotent manner.

(rare) not drinkable

plural of impotency

plural of impotent

(economics) The inability of GDP to respond to a change in the money supply or in interest rates