Trust

firm belief in the reliability, truth, or ability of someone or something.

belief that someone or something is reliable, good, honest, effective, etc. : an arrangement in which someone's property or money is legally held or managed by someone else or by an organization (such as a bank) for usually a set period of time. : an organization that results from the creation of a trust.

to rely upon or place confidence in someone or something (usually followed by in or to): to trust in another's honesty; trusting to luck.