ὠφέλιμος
"helping, useful, serviceable, profitable, advantageous, beneficial", of persons and things, Thuc., Plat., etc.; τινι to on Eur., etc.; ἔς τι for a purpose, Thuc.; πρός τι Plat.; —τὸ ὠφ. as Subst., id=Plat.:—adv. -μως, Xen.; Sup. -ώτατα, id=Xen.