Verify
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
To confirm or substantiate by oath; to show to be true. Particularly used of making formal oath to accounts, petitions, pleadings, and other papers. The word "verify" sometimes means to confirm and substantiate by oath, and seme-times by argument When used in legal proceedings it is generally employed in the former sense.
De Witt v. Hosmer, 3 How. Prae. (N. Y.) 284.