/pruːf/

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Line drawing of proof
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Meaning

Something that shows without any doubt that a thing is true.

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Word origin

From Old French preuve, from Latin probare meaning to test.

Origin
Old French
Root
preuve
English cognates
prove, probable

Examples

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"Proof" is uncountable here, so we do not say "a proof".

.

"Proof that" is followed by the thing it shows.

.

"Proof of something" works in the same way.

Where this fits

Used in

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English · Free printables

proof: worksheet, infographic and listicle

Free printable study downloads for the English word "proof" (Something that shows without any doubt that a thing is true.): a worksheet with the answer key built in, an infographic, and a sentence listicle. Open any one to view, print or save.

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This word is taught in chapter 16, lesson 11: proof, murderer, usual and 7 more words.