研ぎ澄ます とぎすます to sharpen #27,633 Meanings also 研ぎすます · 研澄ます godan verb, transitive to sharpen; to grind; to whet; to hone; to make keen Its kanji 研 ケン · と.ぐ polish, study of, sharpen 澄 チョウ · す.む、す.ます、-す.ます lucidity, be clear, clear, clarify, settle, strain, look grave