негибкий

From LSJ

οὗτοςυἱός μου νεκρὸς ἦν καὶ ἀνέζησεν, ἦν ἀπολωλὼς καὶ εὑρέθη → This son of mine was dead and has come back to life. He was lost and he's been found.

Source

Russian > Greek

ἄκαμπτος, δυσκαμπής