The antonyms for the word "more set-on" can be "less committed", "indifferent", "uninvolved", "casual", and "nonchalant". These antonyms denote a lack of dedication, passion, and interest towards a particular task, activity, or goal. A person who is less committed lacks the desire and determination to achieve their objective. Indifferent individuals show no interest in the matter at hand, and uninvolved people have no role or responsibility in the situation. Casual and nonchalant people may approach a situation with a relaxed and carefree attitude, which can lead to a lack of focus and productivity. In contrast, being more set-on implies a strong sense of purpose, drive, and dedication towards an objective.