Wits

I was almost at my wits' end about how to act.

David has never had a steady job. He has always lived by his wits.

I'm at my wits' end.

Mary scared Tom out of his wits.

He must live by his wits.

I'm not going to get into a battle of wits with you; I never attack anyone who's unarmed.

Tom was scared out of his wits.

It is a great pity not to have enough wits to speak well, nor enough judgment to be quiet.

The municipal government is at their wits' end concerning the garbage problem.

Having lost the battle of wits, Tom was forced into a shameful exile.