brash

This term carries a strong negative connotation of excess, whether in personality, decision-making, or aesthetics. It describes a lack of restraint and a disregard for social norms or careful planning, often evoking an image of someone who is loud and overconfident to the point of being irritating. When applied to colors or sounds, it suggests a sensory overload that is perceived as tasteless or garish. Unlike "bold," which can be positive and intentional, "brash" implies a failure of judgment or a lack of sophistication.