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
v. trans.
P. καταβιβρώσκειν (Plat., Phaedo, 110A).
Met., P. and V. διαφθείρειν.
