To state under a solemn promise to tell the truth which is considered legally equivalent to an oath, especially of those who have religious or other moral objections to swearing oaths; also solemnly affirm.
To make firm; to confirm, or ratify; especially (law) to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review.
To agree, verify or concur; to answer positively.
To assert positively; to tell with confidence; to aver; to maintain as true.
To support or encourage.
To affirm something formally, under oath.
To substantiate or prove the truth of something.
To confirm or test the truth or accuracy of something.