痛心切齿 tòngxīnqièchǐ to gnash one's teeth with hatred Origin Definitions Defs Strokes Stroke Words Sentences Sents 痛心 tòngxīn detest to hate or detest something with intense indignation, such as being pained by a grave error or injustice切齿 切齒 qièchǐ verb to gnash one's teeth To grind or clench the teeth together, used to express extreme hatred or anger; often appears in the phrase 咬牙切齿 yǎoyáqièchǐ.