I just stood there feeling foolish and watching him.

我就傻乎乎地站在那儿看着他。

《柯林斯英汉双解大词典》

Though it may feel foolish (and getting comfortable with feeling foolish might be another way to think outside the box), try writing a poem about the problem you’re working on.

听起来可能很傻（有时觉得傻可能也是跳出定势思维的一种方式，这样想或许你会舒服点），写首诗，说说你碰到什么困难。

youdao

Feeling both foolish and annoyed, Hendrix hurried along after him, having to run to keep pace with the Venusian's long strides.

亨德瑞克斯又是恼火，又感觉自己像傻子一般，快步跟在金星人身后，因为金星人迈的步子特大，他必须小跑才能跟上。

youdao

This is something that people don't want to accept and in the same time, you know, it would be, at least to my mind, foolish and unjust to expect some sort of catharsis of you know, nation-wide feeling of relief.

BBC: News | BREAKFAST WITH FROST | Interview with former Foreign Office diplomat Dame Pauline Neville-Jones and Yugoslav ambassador Vladeta Jankovic