dubious

This word carries a flavor of intellectual suspicion. When describing a person, it suggests a state of internal uncertainty or a refusal to be easily convinced, often manifesting as a skeptical squint or a cautious pause. It is more refined than saying someone is simply unsure. When applied to an object or a claim, it shifts toward a judgment of character or authenticity. A dubious deal or a dubious excuse suggests a hidden flaw or a likely lie, implying that the thing in question is probably fraudulent or unreliable.