proof

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proof^¹

/pɹuːf/ Canada, UK
/pɹuf/ US
/pɹʉːf/ Australia, New Zealand

Rhymes with -uːf

Where it comes from

From Middle English proof, from Old French prove, from Late Latin proba (“a proof”), from Latin probō (“to prove”); see prove; compare also the doublet probe.

noun proofs

countable 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 your unconditional love. Lend me some dough.
Opposite: disproof
uncountable The degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments which induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration. I'll have some proof.
Similar: testament, testimony
countable, uncountable The quality or state of having been proved or tried; firmness or hardness which resists impression, or does not yield to force; impenetrability of physical bodies.
countable, obsolete, uncountable Experience of something. But the chaste damzell, that had never priefe / Of such malengine and fine forgerye, / Did easely beleeve her strong extremitye.
obsolete, uncountable Firmness of mind; stability not to be shaken.
countable A proof sheet; a trial impression, as from type, taken for correction or examination. And these men scour the printed proof for error, blunder, and misspelling.
countable, uncountable A limited-run high-quality strike of a particular coin, originally as a test run, although nowadays mostly for collectors' sets.
countable A sequence of statements consisting of axioms, assumptions, statements already demonstrated in another proof, and statements that logically follow from previous statements in the sequence, and which concludes with a statement that is the object of the proof.
countable A process for testing the accuracy of an operation performed. Compare prove, transitive verb, 5.
countable, obsolete, uncountable Armour of excellent or tried quality, and deemed impenetrable; properly, armour of proof. Till that Bellona's bridegroom, lapped in proof
US, countable, uncountable A measure of the alcohol content of liquor. Originally, in Britain, 100 proof was defined as 57.1% by volume (no longer used). In the US, 100 proof means that the alcohol content is 50% of the total volume of the liquid; thus, perfectly pure absolute alcohol would be 200 proof.

adjective more proof · most proof

Used in proving or testing. a proof load; a proof charge
Firm or successful in resisting. proof against harm
of alcoholic liquors Being of a certain standard as to alcohol content. 60% proof liquor

verb proofs · proofing · proofed

colloquial, intransitive, transitive To proofread.
transitive To make resistant, especially to water.
transitive To test-fire with a load considerably more powerful than the firearm in question's rated maximum chamber pressure, in order to establish the firearm's ability to withstand pressures well in excess of those expected in service without bursting.
transitive To allow (yeast-containing dough) to rise, especially after it has been shaped dough proofing
transitive To test the activeness of (yeast). yeast proofing
Similar: bloom, rehydrate

Proof^²

proper noun

The 98th sura (chapter) of the Qur'an.

Thesaurus

Closest in meaning: validation, proofread, imperviable, impervious, proving, cogent evidence, test copy, validating, trial, demo, indication, sign, test, demonstrate, demonstration, prove

Translations

Every language

noun any effort, process, or operation designed to establish or discover a fact or truth

Español	prueba, comprobación, constatación, ejecutoria
한국어	증거 jeunggeo
日本語	証明 shōmei, 証拠 shōko
中文	證據 /证据 zhèngjù
हिन्दी	प्रमाण pramāṇ, सबूत sabūt
Português	prova
Français	preuve
Deutsch	Beweis
Italiano	prova
Ελληνικά	απόδειξη apódeixi
Română	probă, dovadă
Русский	доказа́тельство dokazátelʹstvo
Tiếng Việt	bằng chứng
العربية	بُرْهَان burhān, دَلِيل dalīl, إِثْبَات ʔiṯbāt
עברית	הוֹכָחָה hokhakhá, רְאָיָה re'ayá

noun the degree of evidence which convinces the mind of any truth or fact, and produces belief

Español	prueba
हिन्दी	प्रमाण pramāṇ
Português	prova
Français	preuve

noun quality or state of having been proved or tried

हिन्दी	प्रमाणिकता pramāṇiktā
Português	provado

noun a proof sheet

Español	prueba
Português	prova
Français	épreuve
Deutsch	Korrekturabzug, Druckfahne
Русский	корректу́ра korrektúra

noun high-quality strike of a coin

Deutsch	polierte Platte

noun process for testing the accuracy of an operation performed

Português	prova
Français	preuve
Deutsch	Beweis

adj used in proving or testing

עברית	ראיה r"aya

adj firm or successful in resisting

Русский	-стойкий -stojkij, -прочный -pročnyj, -упорный -upornyj

verb to allow yeast-containing dough to rise

Deutsch	aufgehen lassen

name 98th sura of the Qur'an

العربية	سورة البينة

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MLA

"proof." Wiktionary, via Micwyn, micwyn.com/word/proof. Accessed 6 Nov. 2026.

APA

proof. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/proof

Chicago

"proof." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/proof.

BibTeX

@misc{proof_2026,
  title = {proof},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/proof},
  urldate = {2026-11-06}
}