The phrase "loss of confidence" often refers to a lack of trust or faith in someone or something. There are a variety of synonyms that can also be used to convey this idea, including distrust, doubt, uncertainty, skepticism, suspicion, apprehension, and misgiving. These words all describe a sense of unease or skepticism about the reliability or trustworthiness of something or someone, and can be used to express a wide range of emotions related to loss of confidence, such as frustration, disappointment, and even anger. Whatever the context, using the right synonym can help to convey the full impact of this powerful feeling.