πιθανουργός
From LSJ
λόγος γέ τοί τις ἔστι τῶν γεραιτέρων, ὅσ' ἂν ἀνόητ' ἢ µῶρα βουλευσώµεθα, ἅπαντ' ἐπὶ τὸ βέλτιον ἡµῖν ξυµφέρειν → there is in fact a saying among the elders, that whatever thoughtless, stupid decisions we make, they all turn out for the best for us
English (LSJ)
όν,
A making probable, τῶν ἀπιθάνων Sch.Hermog.in Rh.7.218 W.
German (Pape)
[Seite 613] wahrscheinlich machend, die Gabe zu überreden, zu gefallen habend (?).
Greek (Liddell-Scott)
πῐθᾰνουργός: -όν, ὁ ποιῶν τι πιθανόν, πιθανουργὸς τῶν ἀπιθάνων προβλημάτων Ρήτορες (Walz) 7. 218, 15.