κερδαίνω
Etym. κέρδος
I. "to gain, derive profit or advantage", κακὰ κ. "to make" unfair "gains", Hes.; κ. ἔκ or ἀπό τινος Hdt., attic; πρός τινος Soph.; τί κερδανῶ; what "shall I gain by" it? Ar.:—c. part. "to gain by" doing, οὐδὲν ἐκμαθοῦσα κερδανεῖς Aesch., etc.
2. absol. "to make profit, gain advantage", Hdt., attic:— "to traffic, make merchandise", Soph.; κ. ἔπη to "receive" fair words, id=Soph.
II. like ἀπολαύω, "to gain" a loss, "reap" disadvantage from a thing, as, δάκρυα κ., Eur.; κ. ζημίαν NTest.