całkowicie głupi

He seems to be completely stupid, and scores straight zeroes in school, making him a model student.

"It's a terrible admission because it makes me sound completely stupid, but I'd never noticed before that they were part of a series."

I might be an idiot, but I'm not completely stupid.

The main character is a completely stupid spy who always has bad luck.

"Were humans completely stupid before they had angels to teach them?"

So I guess this is the perfect time for a completely stupid and futile gesture.

I may not be too bright about some things, but I'm not completely stupid.

I'm not completely stupid, I've seen how it played out.

Grey felt completely stupid; he had walked right into that one!

I just realized that that's a completely stupid name for a blog!

Only an utterly stupid person would plunge ahead without learning what he might have to face.

But I decided it would be utterly stupid in light of the situation.

"I thought he was up with you," he finally managed, feeling utterly stupid.

I assumed, of course, he would sound utterly stupid.

In his own ears, every word he said sounded utterly stupid.

That was an utterly stupid thing to think, but all the same she got up suddenly, as if stung.

A charter member of the organization quit over that action, calling it "utterly stupid."

The consensus was that most of the jokes were utterly stupid.

Way to Godwin the thread with such an utterly stupid term.

That particular point, so obvious it was utterly stupid, hadn't even occurred to me.