hard, difficult, tiring
너희 남편 보기 힘들다
It’s hard to see your husband.
— 퍼니 게임 (1997)
힘들다
It's hard.
— 패왕별희 (1993)
보기보다 힘들다.
It's harder than it looks.
아휴, 힘들다
Ugh, this is exhausting.
— Oldboy (2003)