1.freedom from doubt; belief in yourself and your abilities;
his assurance in his superiority did not make him popular
2.a feeling of trust (in someone or something);
I have confidence in our team
3.a state of confident hopefulness that events will be favorable;
public confidence in the economy
4.a trustful relationship;
he took me into his confidence
5.a secret that is confided or entrusted to another;
everyone trusted him with their confidences