ἀνθυπείκω
From LSJ
εἰ γάρ κεν καὶ σμικρὸν ἐπὶ σμικρῷ καταθεῖο καὶ θαμὰ τοῦτ᾽ ἔρδοις, τάχα κεν μέγα καὶ τὸ γένοιτο → for if you add only a little to a little and do this often, soon that little will become great (Hesiod W&D, 361-362)
English (LSJ)
A yield in turn or mutually, τινί Plu.Cor.18, D.C.45.8.
German (Pape)
[Seite 235] gegenseitig nachgeben, Plut. frat. am. 17 u. öfter.