The meaning of FOOL is a person lacking in judgment or prudence. How to use fool in a sentence.

The man's a complete fool! Any fool can teach himself to type. You must think I'm a bloody fool. He's given me the keys to his car - the fool! I think it amuses him to see people make fools of …

To confound or prove wrong; surprise, especially pleasantly: We were sure they would fail, but they fooled us. 1. Informal. a. To speak or act facetiously or in jest; joke: I was just fooling …

A smart or clever person can be described as no fool or as nobody's fool. He may not look very smart, but he's no fool. Don't try to trick her—she's nobody's fool. If you keep playing the fool …

In the Middle Ages, a fool was a clown or jester. Today, fools are simply silly people who clown around or lack common sense.

a silly or stupid person; a person who lacks judgment or sense. a professional jester, formerly kept by a person of royal or noble rank for amusement. the court fool. a person who has been …

to do something stupid that makes other people think that you are a fool.