ἀτρεκές

From LSJ

τὰν ἐπὶ τᾶς → Either with this or on this | Come back victorious or dead

Plutarch, Moralia, 241

Russian (Dvoretsky)

ἀτρεκές:
I τό Her. = ἀτρέκεια.
II adv. точно, ровно (δεκὰς ἀ. Hom.).