"Clever-clever" is often used to describe someone who is trying a bit too hard to appear intelligent or witty, often to the point of being annoying. Some alternatives to this phrase include "smart-alecky," "know-it-all," "show-offy," or "arrogantly clever." These words convey the same idea of someone who is overly confident in their intelligence but with slightly different connotations. "Smart-alecky" implies a tendency to give sarcastic or insolent replies, while "know-it-all" suggests a person who takes pleasure in correcting others. "Show-offy" emphasizes the need for attention, and "arrogantly clever" highlights the individual's lack of humility. Choosing the right synonym can help convey the subtleties of the person's behavior more accurately.