不知高低 bùzhīgāodī indiscreet Origin Definitions Defs Strokes Stroke Words Sentences Sents 不知 bùzhī verb not to know to not know; to be unaware of or have no idea about高低 gāodī sense of propriety a sense of what is appropriate in speech or behavior; discretion, often used in the negative to mean not knowing one's place or being tactless