witless Antonyms

able to understand quickly sound smart shrewd sharp sensible sapient sane sagacious ruminative resourceful reasonable rational wise witful mentally acute extremely clever able to think quickly well-versed whip-smart scholared sapiens quick-thinking insightful knowledgeable savvy witty quick-witted quick genius facetious educated discerning clever canny brilliant bright brainy astute alert acute gifted ingenious prudent proficient piquant perceptive logical knowing keen