痛心 tòngxīn HSK7 pained Origin Definitions Defs Strokes Stroke Words Sentences Sents 痛心疾首 tòngxīnjíshǒu bitterly resentful to feel extreme hatred or resentment towards something or someone, as if suffering from a physical ache痛心切齿 tòngxīnqièchǐ to gnash one's teeth with hatred to feel extreme hatred or resentment; to gnash one's teeth in deep anger or bitterness