to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review.-to assert positively; to tell with confidence; to aver; to maintain as true; -- opposed to deny.-to declare, as a fact, solemnly, under judicial sanction. see affirmation, 4.-to declare or assert positively.-to make a solemn declaration, before an authorized magistrate or tribunal, under the penalties of perjury; to testify by affirmation.