There are many synonyms for the phrase "put faith in". Some common alternatives include: trust, rely on, have confidence in, count on, believe in, have faith in, depend on, and place trust in. Each of these phrases convey a sense of relying on someone or something to be true, reliable, and steadfast. Depending on the context, the specific synonym chosen may have slightly different connotations. For example, "trust" can imply a long-standing bond between two people, while "rely on" may suggest a more transactional relationship based on performance. Whatever synonym is chosen, the underlying concept remains the same: placing trust in someone or something is an essential part of building productive relationships and achieving success.