Κόως

From LSJ

μὴ δὶς πρὸς τὸν αὐτὸν λίθον πταίειν → do not stumble twice on the same stone

Source

French (Bailly abrégé)

v. Κῶς.

Russian (Dvoretsky)

Κόως: ἡ эп. = Κῶς.