B1nounlawscience
US/pruːf/
UK/pruːf/
facts or documents that show something is true
In context
You need proof of address, such as an electricity bill, to open an account.
There is no proof that this tea helps you lose weight.
Keep the receipt as proof of purchase in case the phone breaks.
Words that go with proof
noun + preposition
- proof ofBring proof of identity to the bank.
- proof of purchaseYou cannot return it without proof of purchase.
adjective + noun
- no proofThe police have no proof.
- living proofShe is living proof that age doesn't matter.
- scientific proofThere is no scientific proof for this idea.
Common mistakes
Incorrect:
Do you have a proof?Correct: Do you have any proof?