Definition: Confidence, a noun, means an expectation or belief that one will win a certain event; generally expressed in phrases such as "he's got a good confidence," which could mean either his chances are high, or he has a good idea. In English, it is used to express the feeling of being confident about something, especially after having done something successfully. For example, if someone confidently states that they are confident in their ability to do a certain job or task, they may be expressing confidence in themselves and their abilities.