ἐγγυᾶν

From LSJ

οἱ βάρβαροι τῇ ἀλήκτῳ συνουσίᾳ ὑπνώθησαν → the barbarians, exhausted by unremitting intercourse, fell asleep

Source

Greek > English (Woodhouse Verbs Reversed)

betroth (see also: ἐγγυῶ, ἐγγυάω)