Definition of confidence noun from the Oxford Advanced American Dictionary

      

    confidence

     noun
    noun
    NAmE//ˈkɑnfədəns//
     
     
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    belief in others
  1. 1[uncountable] confidence (in somebody/something) the feeling that you can trust, believe in, and be sure about the abilities or good qualities of someone or something The players all have confidence in their manager. A fall in unemployment will help to restore consumer confidence. a lack of confidence in the government The new contracts have undermined the confidence of employees. She has every confidence in her students' abilities. see also consumer confidence, vote of confidence, vote of no confidence
  2. belief in yourself
  3. 2 [uncountable] a belief in your own ability to do things and be successful He answered the questions with confidence. People often lose confidence when they are criticized. He gained confidence when he went to college. She suffers from a lack of confidence. While girls sometimes lack confidence, boys often overestimate their abilities. I didn't have any confidence in myself at school.
  4. feeling certain
  5. 3[uncountable] the feeling that you are certain about something They could not say with confidence that he would be able to walk again after the accident. No one can predict with complete/total confidence what will happen in the financial markets. He expressed his confidence that they would win.
  6. trust
  7. 4[uncountable] a feeling of trust that someone will keep information private Eva told me about their relationship in confidence. This is in the strictest confidence. It took a long time to gain her confidence (= make her feel she could trust me).
  8. a secret
  9. 5[countable] (formal) a secret that you tell someone The girls exchanged confidences. I could never forgive Mike for betraying a confidence.
  10. Idioms
    be in somebody's confidence
     
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    to be trusted with someone's secrets He is said to be very much in the President's confidence.
    take somebody into your confidence
     
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    to tell someone secrets and personal information about yourself She took me into her confidence and told me about the problems she was facing.
See the Oxford Advanced Learner's Dictionary entry: confidence