(imp. & p. p.) of Prove.

actual ascertained assured attested authenticated borne out categorically true certain certified circumstantiated confirmed corroborated decided demonstrated determinate determined documentary effectual established factual fixed guaranteed historical in the bag made sure nailed down not in error objectively true on ice open-and-shut proven real secure set settled shown stated substantiated sure-enough tested tried tried and true TRUE true as gospel truthful unconfuted undenied undoubted unerroneous unfallacious unfalse unmistaken unquestionable unrefuted validated veracious verified veritable warranted