是非曲直 ぜひきょくちょく Meanings Noun rights and wrongs (of a case); relative merits (of a case) Kanji 是 affirm. Read as ゼ. 非 non- 曲 melody. Read as キョク. 直 straight. Read as チョク. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists