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early 15c., "physical weakness," also "poverty," from Middle French impotence "weakness," from Latin impotentia "lack of control or power," from impotentem (nominative impotens); see impotent. In reference to a want of (male) sexual potency, from c.1500. The figurative senses of the word in Latin were "violence, fury, unbridled passion." Related: Impotency.
impotence im·po·tence (ĭm'pə-təns) or im·po·ten·cy (-tən-sē)
The quality or condition of being impotent.