人不知鬼不觉 rénbùzhīguǐbùjué in absolute secrecy Origin Definitions Defs Strokes Stroke Words Sentences Sents 人 rén noun person person; people; human being; a human不知 bùzhī adverb unknowingly without realizing; unconsciously; in a way that one is not aware of鬼 guǐ noun ghost ghost; disembodied spirit; devil不觉 不覺 bùjué adverb unconsciously Without one's knowing; unconsciously; in spite of oneself.