Словарь синонимов английского языка - refine

(v) 1. purify, cleanse, clear, clarify, decontaminate: They continued to refine the liquid till all the impurities were gone. 2. cultivate, civilize, polish, improve, elevate, perfect: He is trying to refine his speech by getting rid of his country accent. 3. hone, sharpen, concentrate, focus, subtilize: We ought to refine our argument for higher wages before approaching the management.