definition of
sureness

[1] #1 sureness n. [assurance, self-assurance, confidence, self-confidence, authority] 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". wn

[2] #2 sureness n. the quality of being steady and unfailing; "sureness of hand". wn