(imp. & p. p.) of Ascertain.

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