καταθαρσ-ύνω · katathars-ynō — LSJ
embolden, encourage against, τινὰ πρὸς τὸ μέλλον Plu. Luc. 29:—Pass., in form καταθρασύνομαι, = foreg., Ph. 1.41, Luc. DMort. 4[21].2, D.L. 2.127: c. gen., πρὸς τοὺς ἀλόγως -ομένους τῶν ἐν τοῖς πολλοῖς δοξαζομένων, title of work by Polystr., cf. Them. Or. 34p.464D.