impotence (n.)youdaoicibaDictYouDict[impotence 词源字典]
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 etymology, impotence origin, 英语词源]