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How To Spell proof?

Correct spelling: proof

What are similar spelling words for proof?

What is the definition of proof?

  1. make or take a proof of, such as a photographic negative, an etching, or typeset

What does the abbreviation proof mean?

Google Ngram Viewer results for proof:

This graph shows how "proof" have occurred between 1800 and 2008 in a corpus of English books.
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