Added 9 October 2026
proof
/pɹuːf/ noun
In Latin: argūmentum Wiktionary
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about proof at Wordnik → Where our words come from →
-
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
- A formal series of statements showing that if one thing is true something else necessarily follows from it.
- A measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume).
verb
adjective
-
(used in combination or as a suffix) able to withstand.
temptation-proof
Origin
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.
From Wiktionary, via Kaikki.org (CC BY-SA)