so-called (adj.)youdaoicibaDictYouDict[so-called 词源字典]
1650s, from so + past participle of call (v.). As a "sneer word" (1980, Safire, who lumps it with self-proclaimed, would-be, and purported), from 1837.[so-called etymology, so-called origin, 英语词源]
uncalled (adj.)youdaoicibaDictYouDict
c. 1400, "not summoned," from un- (1) "not" + past participle of call (v.). Similar formation in Swedish okallad, Danish ukaldet. With for and sense of "unnecessary, intrusive" it is first attested 1610.