θαρσύνειν
From LSJ
οἵ γε καὶ ἐν τῷ παρόντι ἀντιπάλως μᾶλλον ἢ ὑποδεεστέρως τῷ ναυτικῷ ἀνθώρμουν → whose navy, even as it was, faced the Athenian more as an equal than as an inferior
Greek > English (Woodhouse Verbs Reversed)
(see also θαρσύνω): cheer, embolden, encourage, be cheerful, be of good cheer, be of good comfort, keep up one's spirits, take courage, take heart, encourage, nerve