*prof, prove,*alteration of

*preve,*from Anglo-French

*preove,*from Late Latin

*proba,*from Latin

*probare*to prove — more at prove

First Known Use: 13th century

Dictionary

: something which shows that something else is true or correct

: an act or process of showing that something is true

mathematics : a test which shows that a calculation is correct

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See proof defined for English-language learners

See proof defined for kids

- The document was
*proof*that her story was true. - He claims that he was home when the murder was committed, but he has no
*proof*. - The
*proof*shows that the theorem is true.

Middle English *prof, prove,* alteration of *preve,* from Anglo-French *preove,* from Late Latin *proba,* from Latin *probare* to prove — more at prove

First Known Use: 13th century

- Synonyms
- attestation, confirmation, corroboration, documentation, evidence, substantiation, testament, testimonial, testimony, validation, voucher, witness

- Antonyms
- disproof

: designed or made to prevent or protect *against* something harmful

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See proof defined for English-language learners

1592

transitive verb

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— **proof·er** *noun*

See proof defined for English-language learners

- She
*proofed*the story carefully.

1745

PROOFS Defined for Kids

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