insecure (adj.)youdaoicibaDictYouDict[insecure 词源字典]
1640s, "unsafe," from Medieval Latin insecurus, from in- "not" (see in- (1)) + Latin securus (see secure). Psychological sense dates from 1935; insecurity in this sense dates from 1917. Related: Insecurely.[insecure etymology, insecure origin, 英语词源]