n. Assurance of mind or firm belief in the good will, integrity, stability, or veracity of another, or in the truth or certainty of a proposition or an assertion; trust; reliance.n. Reliance on one's own powers, resources, or circumstances; belief in one's own competency; self-reliance; assurance.n. That in which trust is placed; ground of trust; one who or that which gives assurance or security.n. Boldness; courage; disregard or defiance of danger.n. A secret; a private or confidential communication: as, to exchange confidences.