espouse
From LSJ
English > Greek (Woodhouse)
verb transitive
betroth: P. and V. ἐκδίδοναι (or mid.), συνοικίζειν, ἐγγυᾶν. V. κατεγγυᾶν, νυμφεύειν, μνηστεύειν; see betroth.
marry: of the man, P. and V. γαμεῖν, ἄγεσθαι; of the woman, P. and V. γαμεῖσθαι, V. νυμφεύειν (or pass.) (dat.); see marry.
Met., espouse a cause: see side with.