proof

¹proof

noun \ˈprüf\

Definition of PROOF

1

a : the cogency of evidence that compels acceptance by the mind of a truth or a fact b : the process or an instance of establishing the validity of a statement especially by derivation from other statements in accordance with principles of reasoning

2

obsolete : experience

3

: something that induces certainty or establishes validity

4

archaic : the quality or state of having been tested or tried; especially : unyielding hardness

5

: evidence operating to determine the finding or judgment of a tribunal

6

a plural proofs or proof : a copy (as of typeset text) made for examination or correction b : a test impression of an engraving, etching, or lithograph c : a coin that is struck from a highly polished die on a polished planchet, is not intended for circulation, and sometimes differs in metallic content from coins of identical design struck for circulation d : a test photographic print made from a negative

7

: a test applied to articles or substances to determine whether they are of standard or satisfactory quality

8

a : the minimum alcoholic strength of proof spirit b : strength with reference to the standard for proof spirit; specifically : alcoholic strength indicated by a number that is twice the percent by volume of alcohol present <whiskey of 90 proof is 45 percent alcohol>

Examples of PROOF

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

Origin of PROOF

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

Related to PROOF

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

Antonyms: disproof

Related Words: (the) goods; certificate, document, exhibit; demonstration, illustration; authentication, identification, manifestation, verification

Near Antonyms: rebuttal, refutation; accusation, allegation, charge; assumption, conjecture, guess, presumption, surmise, suspicion

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Other Logic Terms

a posteriori, connotation, corollary, inference, mutually exclusive, paradox, postulate, syllogism

Rhymes with PROOF

goof, hoof, kloof, poof, pouf, roof, spoof, woof