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

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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 …

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 …

one who lacks sense: I felt like a fool when I couldn't figure out how to use the fax machine. a professional jester: the court fool. a person tricked or deceived into appearing silly or stupid: …

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

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 …

FOOL definition: a silly or stupid person; a person who lacks judgment or sense.

If someone fools you, they deceive or trick you. They tried to fool you into coming after us.

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