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The meaning of PROOF is the cogency of evidence that compels acceptance by the mind of a truth or a fact. How to use proof in a sentence.

PROOF definition: 1. a fact or piece of information that shows that something exists or is true: 2. a logical…. Learn more.

In the majority of cases, prove is a verb, while proof is a noun. There are rare exceptions to this rule, but they should be avoided in formal writing.

proof - any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it"

Definition of proof noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Oct 7, 2005 · Proof: Directed by John Madden. With Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, Danny McCarthy. The daughter of a brilliant but mentally disturbed mathematician, …

Proof is a fact, argument, or piece of evidence which shows that something is definitely true or definitely exists. This is not necessarily proof that he is wrong. Economists have been …

What does PROOF mean? This dictionary definitions page includes all the possible meanings, example usage and translations of the word PROOF. An effort, process, or operation designed …

Jun 22, 2025 · proof (countable and uncountable, plural proofs) An effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial. I need proof of …