'Foolish' in the Bible

In all this Job did no sin, and did not say that God's acts were foolish.

But he said unto her, Thou speakest as one of the foolish women speaketh. What? shall we receive good at the hand of God, and shall we not receive evil? In all this did not Job sin with his lips.

For wrath killeth the foolish man, and envy slayeth the silly one.

I have seen the foolish taking root: but suddenly I cursed his habitation.

Causing counsellors to go away a spoil, And judges He maketh foolish.

“Behold, all of you have seen it;Why then do you act vainly and foolishly [cherishing worthless concepts]?

Foolish men, without even a name.They were forced to leave the land.