pseudo (n.)youdaoicibaDictYouDict[pseudo 词源字典]
late 14c., "false or spurious thing;" see pseudo-. As an adjective in this sense from mid-15c. In modern use, of persons, "pretentious, insincere," from 1945; as a noun from 1959. Related: Pseudish.[pseudo etymology, pseudo origin, 英语词源]