Akademik

impotency
noun
1. the quality of lacking strength or power; being weak and feeble (Freq. 1)
Syn: ↑powerlessness, ↑impotence
Ant: ↑power (for: ↑powerlessness), ↑powerfulness (for: ↑powerlessness)
Derivationally related forms: ↑impotent, ↑impotent (for: ↑impotence), ↑powerless (for: ↑powerlessness)
Hypernyms: ↑quality
Hyponyms:
helplessness, ↑weakness, ↑impuissance, ↑unpersuasiveness, ↑uninterestingness, ↑voicelessness, ↑paper tiger, ↑ineffectiveness, ↑ineffectualness, ↑ineffectuality
2. an inability (usually of the male animal) to copulate
Syn: ↑impotence
Ant: ↑potency, ↑potence (for: ↑impotence)
Derivationally related forms: ↑impotent, ↑impotent (for: ↑impotence)
Hypernyms: ↑sterility, ↑infertility
Hyponyms: ↑erectile dysfunction, ↑male erecticle dysfunction, ↑ED

Useful english dictionary. 2012.