ἀλλόθροος
From LSJ
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English (LSJ)
ον, contr. ἀλλό-θρους, ουν (as always in Trag.)
A speaking a strange tongue, ἐπ' ἀλλοθρόους ἀνθρώπους, κατ' ἀλλοθρόους ἀνθρ., Od. 1.183, 3.302, 15.453: generally, foreign, στρατός Hdt.1.78 ; Αἴγυπτος Id.3.11 ; πόλις A.Ag.1200 ; strange, alien, γνώμη S.Tr.844.—Not in Att.Prose.