καταδιαιτᾶν
From LSJ
Φίλιππον ἐπιστῆσαι τοῖς πράγμασι τούτοις → let Philip have a hand in the business, surrender control to Philip
Greek > English (Woodhouse Verbs Reversed)
(see also: καταδιαιτάω) decide as arbitrator against a person, give a decision against