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B2Formal, Academic, Legal, Technical, Everyday (context-dependent)
Definition
Meaning
Evidence or an argument that establishes a fact or truth beyond doubt.
1. The process of verifying the truth or validity of something (e.g., proofreading, proving a theorem). 2. In law, the evidence sufficient to secure a conviction. 3. In publishing, a preliminary copy for checking and correction (proofs). 4. In alcohol, a measure of strength (e.g., 100 proof whiskey). 5. In baking, the process where yeast dough rises. 6. In mathematics and logic, a sequence of statements demonstrating that a proposition is true.
Linguistics
Semantic Notes
The word spans concrete evidence (proof of purchase) and abstract demonstration (mathematical proof). Its legal and logical senses imply a high standard of certainty. The alcohol sense is a specific technical usage derived from a historical test involving gunpowder.
Dialectal Variation
British vs American Usage
Differences
Minor spelling in compounds (e.g., UK: 'proofread', US also: 'proofread'). Usage is largely identical, but 'proof' as a verb (to make waterproof) is slightly more common in UK technical contexts (e.g., 'proofed fabric'). The alcohol 'proof' measurement differs slightly in calculation but the term is used in both.
Connotations
Largely identical. The mathematical/logical sense has a strong association with rigor in both varieties.
Frequency
Comparably frequent in both varieties across all major senses.
Vocabulary
Collocations
Grammar
Valency Patterns
Proof (that) + clause (e.g., proof that he was there)Proof of + noun phrase (e.g., proof of address)Proof + infinitive (less common, e.g., He is proof to live)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “The proof is in the pudding”
- “The proof of the pudding is in the eating”
- “Living proof”
Usage
Context Usage
Business
Proof of delivery, proof of concept, proof of funds.
Academic
Mathematical proof, burden of proof in philosophy, providing proof for a hypothesis.
Everyday
Proof of age, proof of purchase, photo as proof.
Technical
Alcohol proof, proof stress (engineering), galley proofs (publishing), proofing dough (baking).
Examples
By Part of Speech
verb
British English
- The document was carefully proofed for errors.
- They proofed the new tent material against extreme rain.
American English
- She proofed the manuscript before sending it to the printer.
- The coating proofs the metal against corrosion.
adverb
British English
- This is used in combination with adjectives (e.g., bullet-proof, idiot-proof). Standard adverbial use is rare.
American English
- Functionally similar to British usage, forming compound adjectives (e.g., future-proof, rust-proof).
adjective
British English
- The safe was proof against any attack.
- He is not proof against such flattery.
American English
- The phone case is advertised as shock-proof and water-proof.
- No system is foolproof.
Examples
By CEFR Level
- Here is the proof of my address.
- Do you have proof of purchase for this shirt?
- The photo was clear proof that he had been at the party.
- Scientists need solid proof for their theories.
- The prosecution failed to provide conclusive proof of the defendant's guilt.
- The mathematician presented an elegant proof of the theorem.
- The new data offers compelling proof that the previous model was fundamentally flawed.
- Her resilience under pressure is living proof of the efficacy of the training programme.
Learning
Memory Aids
Mnemonic
Think of a roof that's WATERPROOF. The 'proof' keeps the water out, just as evidence 'proof' keeps doubt out.
Conceptual Metaphor
TRUTH/VALIDITY IS A SOLID OBJECT (e.g., 'solid proof', 'airtight proof', 'concrete proof').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'proof' as 'подтверждение' (confirmation) when it means definitive evidence. Use 'доказательство' for the core meaning.
- The phrase 'proof of concept' is a calque ('доказательство концепции'), but the established Russian term is often 'пилотный проект' or 'макет'.
- 'Proofreading' is 'корректура', not a direct translation using 'proof'.
- The alcohol term 'proof' (градус) is a specific technical translation.
Common Mistakes
- Using 'prove' and 'proof' interchangeably (verb vs. noun).
- Misspelling as 'proove'.
- Using 'proof' as a countable noun incorrectly (e.g., 'a proof' for a piece of evidence is less common than 'a piece of proof' or 'proof').
- Confusing 'proof' with 'evidence' in legal contexts where 'proof' implies a higher standard of conclusiveness.
Practice
Quiz
In which of these contexts is the word 'proof' used to describe a preliminary version?
FAQ
Frequently Asked Questions
'Evidence' is information that suggests something is true. 'Proof' is evidence or an argument that establishes a fact as conclusively true. Proof is a higher standard.
It is primarily uncountable (e.g., 'We need more proof'). However, it can be countable in specific contexts like mathematics ('several elegant proofs'), publishing ('correct the proofs'), or trials ('the proofs were submitted').
In the US, it means the spirit contains 50% alcohol by volume. Historically, it referred to a test where gunpowder soaked in the spirit would still ignite.
As a verb, it mainly means 1) to proofread (e.g., 'proof a text') or 2) to make something resistant (e.g., 'proof a jacket against rain'). The second meaning often appears as a past participle in adjectives like 'waterproofed'.