self-confidence
1. [ noun ] freedom from doubt; belief in yourself and your abilities
Synonyms: confidence assurance authority sureness self-assurance
Examples:

"his assurance in his superiority did not make him popular" "after that failure he lost his confidence" "she spoke with authority"

Related terms: certainty certain uncertain
Similar spelling:   self-confident
  self-conceited
  self-conceitedly
  self-confessed
  self-collected
  self-concern
  self-condemnation
  self-sacrifice
  self-contained
  self-conscious
  self-sufficient
  self-consistent
  self-sufficiency
  self-control
  self-consciously
  self-complacency
  self-command
  self-colored
  self-consciousness
  self-coloured