"Shy of belief" can be described in several different ways with a variety of synonyms. Some words that convey a similar meaning include uncertain, hesitant, doubtful, wary, skeptical, suspicious, leery, and unconvinced. These terms can all be used to express a lack of trust or confidence in something, whether it's a person, idea, or concept. It's important to note that being shy of belief doesn't necessarily mean outright rejection, but rather a sense of caution or hesitation that can be overcome with further evidence or information. Whatever term you choose to use, it's important to be clear and specific in your communication to avoid any misunderstandings.