## Meanings
1. Information or facts that show something is true.
2. To read something carefully to find and correct mistakes.
3. To make something resistant to harm or damage.

## Examples
- If you have any proof of what you say, show it now.
- Always proof your essay before handing it in.
- They proofed the jacket against rain.

## Derived Forms
- counterproof
- misproof
- nonproof
- overproof
- proofer
- proofing
- proofless
- prooflike
- prooflisten
- reproof
- subproof
- underproof

## Related Forms
- probe
- prove

## Roots and Affixes
- Root: *bʰuH-
- Root: proof
- Root: prove
- Root: proba
- Root: probō

## Etymology
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.

## AI Etymology
Proof comes 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. The historical chain includes *bʰuH- (Proto-Indo-European), proof (Middle English), prove (Old French), proba (la-lat), probō (Latin). In present-day English it covers information or facts that show something is true, to read something carefully to find and correct mistakes, and to make something resistant to harm or damage. The wider family includes derived forms such as counterproof, misproof, nonproof, overproof, proofer and related forms such as probe, prove.

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- Describing Qualities

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