ἀντευεργέτημα
From LSJ
ἀναπηδῆσαι πρὸς τὸν πάππον → jumped up on his grandfather's knees, sprang up into his grandfather's lap
English (LSJ)
ατος, τό,
A kindness returned, Hsch. s.v. ἀνθυπούργησον.
German (Pape)
[Seite 247] τό. erwiderte Wohlthat, VLL.