ἀδμισσάριος

From LSJ

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

Source

Spanish (DGE)

ὁ lat. admissarius ταῦρος ἀ. semental, DP 32.4.