refine
From LSJ
φθείρουσιν ἤθη χρήσθ' ὁμιλίαι κακαί → bad company ruins good habits
English > Greek (Woodhouse)
verb transitive
civilise: P. and V. παιδεύειν, ἡμεροῦν.
refine upon (a word or thought): V. κομψεύειν (acc.) (Sophocles, Antigone 324).
Absol., practise refinements (subtle distinctions): P. κομψεύεσθαι, P. and V. λεπτουργεῖν.