-기 일쑤이다
often (end up doing, habitually)
Level 4 · Expression
Explanation
Something undesirable happens frequently, like a habit. Attaches to verb stems; negative situations only.
Examples
그는 늦잠을 자서 지각하기 일쑤였다.
He often oversleeps and is late.
바쁘면 점심을 거르기 일쑤예요.
When I'm busy, I often skip lunch.
메모하지 않으면 약속을 잊어버리기 일쑤다.
If I don't write it down, I tend to forget appointments.
TOPIK note
TOPIK II Reading 3–4 (≈ -곤 하다).