verify

Verb

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

• attach or append a legal verification to (a pleading or petition)

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

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

Related words

• Synonyms: 
  affirm , assert , avow , aver , swan , swear , control