ἀβαρβάριστος
From LSJ
Μεγάλοι δὲ λόγοι μεγάλας πληγὰς τῶν ὑπεραύχων ἀποτίσαντες γήρᾳ τὸ φρονεῖν ἐδίδαξαν → The great words of the arrogant pay the penalty by suffering great blows, and teach one to reason in old age
English (LSJ)
ον, without barbarisms, Lex.Vind.294. Adv. -τως EM331.37. ἀβάρβαρος, f.l. for ἀβόρβορος, q.v.
Spanish (DGE)
-ον
gram.
1 que carece de barbarismos ἀσολοίκιστον καὶ ἀβαρβάριστον τὴν προφορὰν ... ποιεῖσθαι Hdn.Sol.294.
2 adv. -ως sin barbarismos ἀσολοικίστως καὶ ἀ. διαλέγεσθαι EM 331.37G.