胸きょう臆おくきょうおくじ字FuriganaMeanings1nouninnermost thoughts; deepest feelingsA literary, somewhat old-fashioned word for what one truly thinks or feels deep inside. Often used in expressions like 胸臆を打ち明ける or 胸臆に秘める.彼かれはついに胸きょう臆おくを打うち明あけた。He finally revealed his innermost thoughts.