Trust or faith in a person or thing. A trusting relationship: I took them into my confidence. That which is confided; a secret: A friend does not betray confidences. A feeling of assurance that a confidant will keep a secret: I am telling you this in strict confidence. A feeling of assurance, especially of self-assurance. The state or quality of being certain: I have every confidence in your ability to succeed. Of, relating to, or involving a swindle or fraud: a confidence scheme; a confidence trickster.