wits

(now usually in the plural) Sanity.

“He's gone completely out of his wits.”

(obsolete usually in the plural) The senses.

Intellectual ability; faculty of thinking, reasoning.

“Where she has gone to is beyond the wit of man to say.”

The ability to think quickly; mental cleverness, especially under short time constraints.

“My father had a quick wit and a steady hand.”

Intelligence; common sense.

“The opportunity was right in front of you, and you didn't even have the wit to take it!”

Humour, especially when clever or quick.

“The best man's speech was hilarious, full of wit and charm.”

A person who tells funny anecdotes or jokes; someone witty.

“Your friend is quite a wit, isn't he?”

Senses.

Sanity