hyperactive

This term carries a strong clinical connotation, often associated with Attention Deficit Hyperactivity Disorder (ADHD). While it can be used colloquially to describe a high-energy person or a restless pet, it typically implies a level of activity that is disruptive or uncontrollable rather than simply enthusiastic. In a non-medical sense, the word suggests a frantic or scattered energy. It differs from words like energetic or lively by emphasizing an excess of movement that interferes with focus or social norms, often leaning toward a negative or concerned tone depending on the speaker's intent.