ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
ἡ (ΑΜ θρασύτης) θρασύς
αναίδεια, αυθάδεια, θράσος
αρχ.
μεγάλη τόλμη, γενναιότητα.