ἐνήσω

From LSJ

ἔργοισι χρηστός, οὐ λόγοις ἔφυν μόνον → a friend in deeds, and not in words alone

Source

French (Bailly abrégé)

f. de ἐνίημι.

Russian (Dvoretsky)

ἐνήσω: fut. к ἐνίημι.