peculiarity (n.)youdaoicibaDictYouDict[peculiarity 词源字典]
c. 1600, "exclusive possession;" 1640s, "special characteristic," from peculiar + -ity, or else from Latin peculiaritas. Meaning "an oddity" is attested by 1777. Related: Peculiarities.[peculiarity etymology, peculiarity origin, 英语词源]