idiom
R
To be so worried or anxious about something that it keeps you awake at night.
I didn't lose sleep over the test because I studied well.
시험 때문에 잠을 설쳤지 않았어요. 제대로 공부했거든요.
R
To be very troubled or concerned about something.
She's been losing sleep over her son's health.
그녀는 아들의 건강 때문에 잠을 설치고 있다.
translation
夜不能寐, 忧心忡忡