Ἀχαρναί
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)
ῶν, αἱ,
A Acharnae, a famous deme of Attica, Th.2.19sq.: mdash;Ἀχαρνεύς, έως, ὁ, inhabitant of Acharnae, pl. Ἀχαρνῆς, title of play by Ar.: poet. Ἀχαρνηΐδαι Ar.Ach.322:—Adj. Ἀχαρνικός, ή, όν, ib. 180; Ἀ. κισσός, = κορυμβίας, Thphr.HP3.18.6:—also Ἀχαρνίτης, ου, ὁ, κισσός AP7.21 (Simm.):—Adv. Ἀχαρνῆσι at Acharnae, Luc.Icar. 18: Ἀχαρνῆθεν from Acharnae, Anaxandr.41.18.
Greek (Liddell-Scott)
Ἀχαρναί: -ῶν, αἱ, διάσημός τις δῆμος τῆς Ἀττικῆς, Θουκ. 2. 19 κἑξ.: ― Ἀχαρνεύς, έως, ὁ, κάτοικος τοῦ δήμου Ἀχαρνῶν, πληθ. Ἀχαρνεῖς· ― Ἀχαρνῆς, μία ἐκ τῶν Κωμῳδ. τοῦ Ἀριστοφάνους· ποιητ. Ἀχαρνηίδαι Ἀριστοφ. Ἀχ. 322. ― Ἐπίθ. Ἀχαρνικός, ή, όν, αὐτόθι 180. ― Ἐπίρρ. Ἀχαρνῆσι, ἐν Ἀχαρναῖς, Λουκ. Ἰκαρομ. 18· Ἀχαρνῆθεν, ἐξ Ἀχαρνῶν, Ἀναξανδρ. ἐν «Πρωτεσιλάῳ» 1. 18.