ἰδιωτισμός
From LSJ
English (LSJ)
ὁ,
A way or fashion of a common person, Epict.Ench.33.6, S.E.M.1.67, Dam.Isid.223; in language, homely, vulgar phrase, Phld.Po.2.71, Longin.31.1, D.L.7.59. 2 Rhet., argumentum ad hominem, usu. in the form of a hypothetical question, Rufin.Fig.10.
German (Pape)
[Seite 1238] ὁ, das Leben u. bes. die Sprechweise des gemeinen Mannes, Sp., wie Longin. 31 S. Emp. adv. gramm. 67.