| verb | confirm the truth of “Please verify that the doors are closed” |
| verb | check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard “Are you controlling for the temperature?” |
| verb | attach or append a legal verification to (a pleading or petition) |
| verb | to declare or affirm solemnly and formally as true “Before God I swear I am innocent” |
| verificatory | adjective | serving to support or corroborate |
| verifiable | adjective | capable of being verified |
| verification | noun | additional proof that something that was believed (some fact or hypothesis or theory) is correct |
| verifier | noun | someone who vouches for another or for the correctness of a statement |
| control | noun | a standard against which other conditions can be compared in a scientific experiment |
| affirmation | noun | the act of affirming or asserting or stating something |
| affirmer | noun | someone who claims to speak the truth |
| assertable | adjective | capable of being affirmed or asserted |
| assertion | noun | the act of affirming or asserting or stating something |
| asserter | noun | someone who claims to speak the truth |
| avower | noun | someone who claims to speak the truth |
| avowal | noun | a statement asserting the existence or the truth of something |
| averment | noun | a declaration that is made emphatically (as if no supporting evidence were necessary) |
| swearer | noun | someone who takes a solemn oath |
| swearing | noun | a commitment to tell the truth (especially in a court of law); to lie under oath is to become subject to prosecution for perjury |