TRUSTED definition: 1. deserving of trust, or able to be depended on : 2. deserving of trust, or able to be depended…. Learn more. : firm belief in the character, ability, strength, or truth of someone or something. : confident hope. : property held or managed by one person or organization (as a bank) for the benefit of another. especially : one that reduces or threatens to reduce competition. Learn the meaning of trusted as an adjective that describes someone or something regarded as honest and sincere. See how to use trusted in sentences from various sources and find synonyms and related terms. to rely upon or place confidence in someone or something (usually fol. by in or to): to trust in another's honesty; trusting to luck. hope: Things work out if one only trusts. to sell merchandise on credit. rely or depend on. to believe.