ἀντοφείλειν
From LSJ
Μιμοῦ τὰ σεμνά, μὴ κακῶν μιμοῦ τρόπους → Graves imitatormores, ne imitator malos → Das Edle nimm zum Vorbild, nicht der Schlechten Art
Greek > English (Woodhouse Verbs Reversed)
(see also: ἀντοφείλω) owe in return
Lexicon Thucydideum
accepti beneficii gratiam debere, to owe thanks for a favor received, 2.40.4.