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
fortūnātus: a, um, Part. and P. a., from fortuno.
(1) fortūnātus,¹⁰ a, um, p.-adj. de fortuno, heureux, fortuné : Cic. Tusc. 3, 57 ; Cat. 2, 7 ; Br. 327