形容词愚蠢的; 鲁莽的; 荒谬的，可笑的; 混

形容词wisesensiblesagaciousreasonable

形容词

1. It was foolish to take the test without preparation.
没有准备就去应试是愚蠢的。

2. He looked foolish in his red pants.
他穿著红裤子看上去真可笑。

3. It's foolish to idle away one's precious time.
把大好时光浪费掉是愚蠢的。

4. How foolish I was not to have bought it.
我没买下它真是太傻。

1. 表示反对：表示赞成:approve, agree, share, prefer, wise, reasonable, favorable | 表示反对:disapprove, disagree, unwise, ridiculous, foolish, childish | 表示赞赏:admire,appreciate,think much of, think highly of

1. (举止或行为)愚蠢的，傻的，笨的
If someone's behaviour or action is foolish, it is not sensible and shows a lack of good judgment.

e.g. It would be foolish to raise hopes unnecessarily...
无谓地燃起人们的希望是愚蠢的。
e.g. It is foolish to risk skin cancer.
冒患上皮肤癌的风险是愚蠢的。