결벽증이 · 결벽증을
mysophobia, compulsive cleanliness, being a neat freak
Example
제 룸메이트는 결벽증이 있어서 하루에 세 번 청소해요.
My roommate is a neat freak and cleans three times a day.
Word parts
결 clean+벽 habit+증 symptom
Literally 'cleanliness-habit condition'.
Good to know
Very common in casual speech for a neat freak, not only a medical diagnosis.
Related words