fool

US /fuːl/

UK /fuːl/

a person who acts unwisely or imprudently; a silly person

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Don't be a fool and invest all your money in one stock.

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He made a fool of himself with his silly remarks.

a person who was formerly a jester or clown, kept in a royal or noble household

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The king's fool entertained the court with jokes and tricks.

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In medieval times, a fool often had the freedom to speak truth to power.

trick or deceive (someone); dupe

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Don't let him fool you with his charm.

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She tried to fool her parents into thinking she was studying.