Vocabulary
수상하다
be suspicious, fishy
Meaning
수상하다: “be suspicious,” “seem fishy”; indicates that a person, behavior, or situation gives reason for suspicion.
Why this form?
이상하다 — “be strange / odd”: broader; something can be 이상하다 simply because it is unusual. It can also be suspicious in context, but 수상하다 makes suspicion the central meaning.
의심스럽다 — “be doubtful / suspicious”: directly foregrounds doubt about reliability, truth, or innocence; 수상하다 is especially natural for a person, behavior, or situation that “looks fishy.”
Forms not to confuse
이상하다
오늘 기계 소리가 좀 이상해요. — The machine sounds a little strange today.
의심스럽다
그 설명은 조금 의심스러워요. — That explanation seems a little doubtful.
Examples
지금 우리가 처한 상황은 정말 수상해요. — The situation we are in is really suspicious.
그 사람의 행동이 수상해요. — That person’s behavior is suspicious.