불면증이 · 불면증을
insomnia
Example
스트레스 때문에 불면증이 생겼어요.
I developed insomnia because of stress.
Word parts
불 not+면 sleep+증 symptom
Literally 'not-sleeping condition'; -증 = medical condition: 우울증, 건망증.
Good to know
The common pattern is 불면증에 시달리다, 'to suffer from insomnia'.
Related words