When we are uncertain or skeptical about something, we may use the phrase "has one's doubts." However, there are many possible synonyms that can convey the same meaning. For example, one might say that they are unsure, hesitant, or apprehensive about a particular issue. Alternatively, one might express skepticism, suspicion, or incredulity regarding a claim or statement. Doubts can also manifest as reservations, qualms, or misgivings about a particular course of action. Regardless of the specific terminology used, it's important to recognize and acknowledge our doubts, as they can help us make informed decisions and avoid potential pitfalls.