Synonyms of impotent

Adjective

1. impotent (vs. potent), ineffective, ineffectual, unable, impuissant, powerless, sterile#1, unfertile#1, infertile

usage: lacking power or ability; "Technology without morality is barbarous; morality without technology is impotent"- Freeman J.Dyson; "felt impotent rage"

2. impotent (vs. potent)

usage: (of a male) unable to copulate

Definition and meaning of impotent (Dictionary)