The antonyms for "confer trust" can vary depending on the context in which the phrase is used. However, generally speaking, the opposite of trusting someone would be mistrusting them or being skeptical of their actions or motives. Other antonyms for "confer trust" might include betraying someone's trust, breaking a promise or covenant made with them, or simply not being reliable or dependable. Ultimately, when someone confers trust, they are placing a great deal of faith and confidence in another person. The opposite of this would be to doubt, suspect, or have reservations about that person's character or abilities.