μαλθάσσω
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)
A = μαλάσσω, soften, soothe, μ. κέαρ A.Pr.381; τωὰ λόγοις E.HF298; τί γάρ σε μαλθάσσοιμ' ἄν . . ; why should I soothe thee with fair words ? S.Ant.1194: μ. κοιλίην relax the bowels, Hp. Acut.16, Art.40:—Pass., οὐδὲ μαλθάσσει λιταῖς A.Pr.1008; μαλθαχθεῖσ' ὕπνῳ unnerved by sleep, Id.Eu.134.