IMPOTENT

adjective Etymology: Middle English, from Anglo-French & Latin; Anglo-French, from Latin ~-, impotens, from in- + potent-, potens potent Date: 14th century 1. not potent ; lacking in power, strength, or vigor ; helpless , unable to engage in sexual intercourse because of inability to have and maintain an erection, incapable of self-restraint ; ungovernable , ~ noun ~ly adverb