Confidence is a crucial element in achieving success and harmony in life. When we have confidence in someone, we trust them and believe in their abilities. There are numerous synonyms that we can use instead of the phrase "has confidence in." To name a few, we can say, "trusts," "relies on," "has faith in," "believes in," "has assurance in," "has conviction in," "has certainty in," "has reliance on," or "has dependence on." These words convey a sense of trust, assurance, and faith in the person's capabilities and character. Using these synonyms can bring more depth and variety to our communication and enhance our expression of trust and confidence.