proof
//pruːf//
Noun
Evidence or argument establishing a fact or the truth of a statement.
Do you have any proof that he was there?
A test or trial to establish quality, accuracy, or genuineness.
The pudding is the proof of the recipe.
A trial impression of printed material used for checking and correction before final printing.
The editor reviewed the proofs before sending them to the printer.
The strength of distilled alcoholic liquor, typically expressed as a percentage or degree.
This whiskey is 80 proof, which means it contains 40% alcohol.
A sequence of logical steps showing that a mathematical or logical statement necessarily follows from accepted axioms or premises.
The student wrote a mathematical proof to show that the theorem was true.
Antonym
Verb
To make something resistant or impervious to a particular thing.
We need to proof the fabric against water before using it outdoors.
To test the accuracy of a typeset or printed text by reading a proof.
She proofed the manuscript before it went to print.
To activate yeast by mixing with warm water.
Proof the yeast in warm water before adding it to the flour.
Synonym
Adjective
Resistant to or able to withstand something specified.
This jacket is waterproof and windproof.