Noun

• S: (n) assurance, self-assurance, confidence, self-confidence, authority, sureness (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"
• attribute
• direct hypernym / inherited hypernym / sister term
• S: (n) certainty (the state of being certain) "his certainty reassured the others"
• derivationally related form
• W: (adj) confident [Related to: confidence] (having or marked by confidence or assurance) "a confident speaker"; "a confident reply"; "his manner is more confident these days"; "confident of fulfillment"
• W: (adj) self-confident [Related to: self-confidence] (showing poise and confidence in your own worth) "hardly more than a boy but firm-knit and self-confident"
• W: (adj) sure [Related to: sureness] (infallible or unfailing) "a sure (or true) sign of one's commitment"
• W: (adj) sure [Related to: sureness] (having or feeling no doubt or uncertainty; confident and assured) "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends"
• S: (n) sureness (the quality of being steady and unfailing) "sureness of hand"