良質りょうしつ Common I-adj Noun Noun English jmdict 1 adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi) good quality;fine quality;superior quality;high quality このテーブルは良質のオーク材でできている。 This table is made of good oak.