δῦναι

From LSJ

Ἀλλ' Ἀχέροντι νυμφεύσω → I will become the bride of Acheron

Sophocles, Antigone, 816

French (Bailly abrégé)

inf. ao.2 de δύω.

Russian (Dvoretsky)

δῦναι: = δύμεναι.