głupi niemądry in English:

To try to bring it back would be foolish.

A foolish impulse made me say what I should have left unsaid.

A foolish misunderstanding severed their long friendship.

How foolish!

It is foolish of you to build a castle in the air while forgetting to drive in pilings for its foundation.

Life is as a box of matches. Treating it cautiously is foolish, not treating it cautiously is dangerous.

Women are directly adapted to act as the nurses and educators of our early childhood, for the simple reason that they themselves are childish, foolish, and short-sighted.

It is ridiculous as well as foolish to think man superior to woman, or woman to man.

Claiming that money is not a requirement for happiness is foolish.

A foolish son is a grief to his father, And bitterness to her that bare him.

Would it be dangerous for a company to be run by a foolish CEO?

There was a feeling of constraint in the room; no one dared to tell the king how foolish his decision was.

Meanwhile, the foolish uncle was sitting in the living room.

The victim of blackmail has been paying hush money for years, but now he realizes it is foolish, and he has decided not to pay a red cent more.

Don't be silly!

Even the cleverest students can make silly mistakes.

Ikeda made several silly mistakes, and so he was told off by the department head.

The meeting was going off without a hitch until he threw a wet blanket on it by making silly remarks.

Bob thinks it is a silly idea to call his mother who is so far away, to spend so much, and to say so little.

It may never be known how we silly Anglophones got "baloney" out of "bologna."

His parents' view was that he was wasting his earnings on a silly girl.

Read, every day, something no one else is reading. Think, every day, something no one else is thinking. Do, every day, something no one else would be silly enough to do. It is bad for the mind to be always part of unanimity.

If my kid couldn't speak Shanghainese, I’d slap him silly. the man said.

This may be a silly question, but which is stronger - a tiger or a lion?

Sentences bring context to the words. Sentences have personalities. They can be funny, smart, silly, insightful, touching, hurtful.

What a silly question! That was a silly thing to do, wasn’t it? Don’t be silly – it’s only a spider. She makes a fuss about such silly little (= unimportant) things.

It is a silly practice for non-Christians to send chocolates on St. Valentine's Day.

All that's left for me is to drink myself silly with vodka and to get lost in sleep.