συνασπίζειν
From LSJ
Καλὸν τὸ μηδὲν εἰς φίλους ἁμαρτάνειν → Nihil peccare in amicos est pulcherrimum → Gut ist, sich gegen Freunde nicht versündigen
Greek > English (Woodhouse Verbs Reversed)
(see also: συνασπίζω) be companion in arms to, be fellow-soldier with