proof
noun
evidence sufficient to establish a thing as true, or to produce belief in its truth.
had been proofing
-
past perfect progressiveof proof.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I had been proofing away peacefully for awhile when suddenly instead of the next page, I got a page about twenty pages further on.
From The Project Gutenberg FAQ 2002 by Jim Tinsley
