διέκπλοος
From LSJ
τέχνη δὲ ἄνευ ἀλκῆς οὐδὲν ὠφελεῖ (Thucydides 2.87.4.6) → η τέχνη απαιτεί κουράγιο, skill without heart is useless
English (LSJ)
contr. διέκπλους, ὁ,
A passage, τῶν βραχέων through the shallows, Hdt.4.179; δ. ὑπόφαυσιν καταλιπεῖν Id.7.36, cf. Pl. Criti. 115e. II breaking the enemy's line in a sea-fight, δ. ποιεύμενος Hdt.6.12, cf. Th.1.49, 7.36.