The word "unclever" refers to something that is not smart, quick-witted or intelligent. Some antonyms for "unclever" include clever, intelligent, astute, shrewd, resourceful, sharp-witted, and quick-thinking. Clever people have the ability to think logically and creatively, solve problems efficiently, and make wise decisions. Intelligence implies a vast and complex network of knowledge and understanding. Astuteness refers to having sharp insight and the ability to judge situations accurately. Resourceful individuals have an abundant supply of ideas and solutions for difficult problems. Sharp-witted people have the ability to think quickly and critically, while quick-thinking people react fast to situations.