Confidence (noun)

1. The feeling or belief that one can rely on someone or something.
2. A feeling of self-assurance arising from one"s appreciation of one"s own abilities or qualities.
3. A state of trust or intimacy.

Origin:

Late middle english: from old french, from latin confidentia, from confidere "have trust in".

Examples:

1. He spoke with confidence about the future of the company.
2. She has confidence in her own abilities.
3. He had confidence in his team.
4. She gained confidence after her success.
5. The speaker's confidence was obvious in his delivery.