Trust with Definition 1 of 2Pro Tip 1/3Emotional Weight Using 'trust with' often implies emotional investment and the importance of the entrusted item or matter. She trusted him with her deepest fears. Pro Tip 2/3Responsibility Implication 'Trust with' suggests that the person given trust is expected to show responsibility and care. We trust you with the team's project while we're away. Pro Tip 3/3Relationship Depth The phrase often signifies a close relationship or a high level of comfort between people. I only trust my family with my house keys.