proof
/pɹʉːf/
As a noun, it carries a weight of finality and certainty. While "evidence" suggests a clue or a piece of a puzzle, "proof" implies the puzzle is solved and the conclusion is indisputable. It is common in legal, scientific, and mathematical contexts where absolute truth is required. As an adjective and transitive verb, it describes a state of impenetrable defense. It conveys a feeling of security and resilience, suggesting that the object has been specifically engineered to repel a certain threat (e.g., water, fire, or sound). In the culinary sense, as an intransitive verb, it refers to a biological process of activation. The connotation here is one of patience and preparation, focusing on the growth of yeast rather than resistance or evidence.
Uncountable when referring to general evidence ('We have proof that he lied'). Countable when referring to a formal logical demonstration or a trial print of a document ('A mathematical proof' or 'Checking the page proofs for typos').
💬Casual Conversation
I'm convinced it rained in London today. I can just feel it.
Unless you have actual proof, quit moping and check the seals.
Meanings
Evidence or argument establishing a fact or the truth of a statement.
"The lawyer presented clear proof of the defendant's innocence."
Unable to be penetrated, damaged, or affected by something.
"These hiking boots are completely waterproof."
To make something resistant to a particular substance or influence.
"The workers spent the afternoon proofing the roof against leaks."