LSJ
behave like a Scythian, i.e., drink immoderately, Hieronym. Rhod. ap. Ath. 11.499f; cf. ἐπισκυθίζω. from the Scythian practice of scalping slain enemies, shave the head, ἐσκυθισμένος ξυρῷ E. El. 241; so [χαίτην] ἐσκύθιξε φασγάνῳ cut it off in mourning, Epigr.Gr. 790.8 (Achaea); cf. ἀποσκυθίζω.
talk Scythian, Him. Or. 30.1.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)