痛心入骨 is an idiom

痛心入骨tòng xīn rù gǔ

形容伤心到了极点。

Origin 《后汉书·袁绍传》：“是以智达之士莫不痛心入骨。”

Example 每与刘左将军、孙公祐共论此事，未尝不～，相为悲伤也。（《三国志·蜀志·孙乾传》）

Word breakdown for “痛心入骨”: Open in Reader →

痛心HSK 7–9

1.grieved2.pained

入HSK 6

1.to enter; to go into2.to join; to become a member of3.(bound form) to conform to (as in 入时[rù shí])4.abbr. for 入声[rù shēng]+1 more +2 more

1.used in 骨碌碌[gū lù lù]2.used in 骨碌[gū lu]3.used in 骨朵[gū duo]

bone