δυσθυμία
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
English (LSJ)
ἡ,
A despondency, despair, Hp.VM10, Pl.Lg.666b, etc.; πρὶν ἐλθεῖν ξυμμάχοις δυσθυμίαν E.Supp.696: pl., Id.Med.691, S.Fr.663, Arist.Pr.954b35, Ph.2.99. II ill-temper, Them.Or.13.172c.