"Sat on one's butt" is a phrase that denotes a lazy and inactive lifestyle. Its antonyms, on the other hand, represent a more energetic and proactive way of living. Some opposite words for this phrase include "active," "busy," "productive," "engaged," "involved," and "dynamic." Living a life filled with movement, goals, and challenges keeps individuals physically and mentally sharp. Exercise, hobbies, work, and social interactions all provide opportunities to maintain an active lifestyle. Instead of being "sat on their butt," people engaged in various activities enjoy a more fulfilling and meaningful existence. So, it is good to stay away from such a sedentary life and be more active.