ver·i·fy 
(vĕrə-fī′)
(vĕrə-fī′)tr.v. ver·i·fied, ver·i·fy·ing, ver·i·fies
1. To demonstrate the truth or accuracy of, as by the presentation of evidence: experiments that verified the hypothesis. See Synonyms at confirm.
2. Law
a. To attest to the truth of (something) formally or under oath.
b. To make a formal verification in support of (a pleading).
[Middle English verifien, from Old French verifier, from Medieval Latin vērificāre : Latin vērus, true; see wērə-o- in the Appendix of Indo-European roots + Latin -ficāre, -fy.]
ver′i·fia·ble adj.
ver′i·fia·bly adv.
veri·fi′er n.