adj. 愚蠢的, 荒谬的, 可笑的
He was angry with himself for having made such a foolish mistake.
Can you persuade her out of her foolish plans?
I felt rather foolish when I couldn't answer the teacher's question.
1. 愚蠢的, 傻的[+to-v]
a foolish person
How foolish I was not to have bought it.
It was foolish to take the test without preparation.
2. 荒谬的, 可笑的
He looked foolish in his red pants.