proof.

1. Evidence or reasoning sufficient to establish a claim under the relevant standards.

2. A trial printed or digital version checked before final publication.

3. A scale used to state a drink's alcohol strength.

Use it for

Words that belong together

• proof of identity
• mathematical proof

On the page

The pattern suggested an association but was not proof of causation.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Countable or uncountable by context; countable singular proof; plural proofs. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.