The phrase "more witting" refers to being more aware or conscious of something, so antonyms would be words that describe the opposite of this state. Some possible antonyms for "more witting" include: unaware, unconscious, oblivious, ignorant, inattentive, and careless. These words convey a sense of not paying attention or being ignorant of one's surroundings or situation. In contrast, being "more witting" implies a heightened level of perception and awareness, which can be useful in many situations. To improve one's ability to be more witting, it may be helpful to practice mindfulness and self-awareness techniques, such as meditation or journaling.