ὀνησιφόρος
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)
ον,
A bringing advantage, beneficial, Hp.Praec.14, Alex. 195.5, Com.Adesp.109.11, Agatharch.99, Ruf. ap. Orib.8.24.34, Ptol. Tetr.157 ; remunerative, ὕμνοι Phld.Rh.1.219 S. ; μαθήματα Luc.Vit. Auct.26. Adv. -ρως Plu.2.71d.
German (Pape)
[Seite 347] Nutzen bringend; S. Emp. adv. gramm. 275; in einem Wortspiele von Alexis bei Ath. VII, 287 f auch mit ὄνος zusammengebracht.