verify

verb

Etymology: From Old French verifier (French: vérifier), from Medieval Latin vērificāre (“make true”), from Latin vērus (“true”) + faciō (“do, make”); see -fy.

1. To substantiate or prove the truth of something.

   “"It is early to judge," he remarked, after stopping the car in order to verify the name on the brass plate, "but, upon my word, Max, I really think that our ghost might have discovered more appropriate quarters."”

2. To confirm or test the truth or accuracy of something.

   “In comparison, it takes about a minute to save, rewind and manually verify a similar file on a cassette.”

3. To affirm something formally, under oath.