assurance (

     n 1: freedom from doubt; belief in yourself and your abilities;
          "his assurance in his superiority did not make him
          popular"; "after that failure he lost his confidence";
          "she spoke with authority" [syn: self-assurance, confidence,
           self-confidence, authority, sureness]
     2: a binding commitment to do or give or refrain from
        something: "an assurance of help when needed"; "signed a
        pledge never to reveal the secret" [syn: pledge]
     3: a statement intended to inspire confidence; "the President's
        assurances were not respected"
     4: a British term for some kinds of insurance