perplexing
🇺🇸
/pərˈpleksɪŋ/
🇬🇧
/pəˈpleksɪŋ/
causing confusion or uncertainty because something is difficult to understand
The math problem was so perplexing that even the teacher had trouble solving it.
그 수학 문제는 너무 복잡해서 선생님조차 해결하기 어려웠다.