βαρβαροκτόνος
From LSJ
οὐκ ἔστιν οὐδείς, οὐδ' ὁ Μυσῶν ἔσχατος → there is nobody, not even the last of the Mysians | there is nobody, not even the meanest of mankind
English (LSJ)
ον, slaughtering barbarians, Thom.Mag.p.141 R.
Greek (Liddell-Scott)
βαρβᾰροκτόνος: -ον, ὁ ἀποκτείνων βαρβάρους, Θωμ. Μ. σ. 141.