crackpot
🇺🇸
/ˈkrækpɑːt/
🇬🇧
/ˈkrækpɒt/
having very unusual or unreasonable ideas
His crackpot theories about aliens were met with laughter.
그의 우주인에 대한 괴짜 이론은 웃음거리가 되었다.
a person with very unusual or unreasonable ideas
The professor dismissed the student as a crackpot.
교수는 그 학생을 미친놈 취급했다.