The antonyms for the word "more nitwitted" include bright, intelligent, smart, savvy, sharp, astute, clever, quick-witted, and intelligent. These words describe someone who is not foolish or silly, but rather intelligent, clever, and quick-witted. These individuals tend to be knowledgeable, resourceful, and competent, with the ability to perceive quickly and react accordingly. They are critical thinkers who can make informed decisions, solve complex problems, and adapt to changing circumstances. Overall, antonyms for the word "more nitwitted" describe individuals with exceptional faculties, rather than those who lack intelligence, wit or common sense.