importune (v.)youdaoicibaDictYouDict[importune 词源字典]
1520s, back-formation from importunity, or else from Middle French importuner, from Medieval Latin importunari "to make oneself troublesome," from Latin importunus "unfit, troublesome," originally "having no harbor" (i.e. "difficult to access"), from assimilated form of in- "not, opposite of" (see in- (1)) + portus "harbor" (see port (n.1)). Related: Importuned; importuning. As an adjective from early 15c.[importune etymology, importune origin, 英语词源]