ἀντευεργέτημα
From LSJ
καὶ ἐχθροὶ τοῦ ἀνθρώπου οἱ οἰκιακοὶ αὐτοῦ → and a man's foes shall be they of his own household (Micah 7:6, Matthew 10:36)
English (LSJ)
ατος, τό,
A kindness returned, Hsch. s.v. ἀνθυπούργησον.
German (Pape)
[Seite 247] τό. erwiderte Wohlthat, VLL.