Verify

To make into a verb; to use as a verb; to verbalize.

To prove to be true or correct; to establish the truth of; to confirm; to substantiate.

To confirm or establish the authenticity of by examination or competent evidence; to authenciate; as, to verify a written statement; to verify an account, a pleading, or the like.

To maintain; to affirm; to support.

confirm the truth of; "Please verify that the doors are closed"; "verify a claim"

to declare or affirm solemnly and formally as true; "Before God I swear I am innocent"

check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard; "Are you controlling for the temperature?"