thoughtlessly
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 > Greek (Woodhouse)
adv.
P. ῥᾳθύμως, P. and V. ἀφροντίστως (Xen.); see heedlessly.
Lightly: P. and V. κούφως.
Imprudently: P. ἀλογίστως, Ar. ἀπεριμερίμνως; see rashly.
Inconsiderately: P. ἀγνωμόνως.
At random: P. and V. εἰκῆ.