κηδεμονεύω
From LSJ
ἐὰν οὖν τὰ μαλακὰ σκληρῶς καὶ τὰ σκληρὰ μαλακῶς λέγηται, πιθανὸν γίγνεται → but if, as a result, gentle things are said harshly and harsh things gently, the result is unpersuasive
English (LSJ)
A to be a guardian, παίδων Just.Nov.94.2:—Pass., to be a ward, ib.18.9.
Greek (Liddell-Scott)
κηδεμονεύω: κηδεμονέω, μεταγεν., ἴδε Κόντον ἐν Γλωσσ. Παρατηρ. σ. 122.