The term "cleaned up act" refers to a situation in which an individual or organization has made significant efforts to improve their behavior, actions, or performance. In contrast, antonyms for this term would include phrases such as "sloppy," "unprofessional," "messy," "disorganized," and "unreliable." These words suggest a lack of effort or care in improving one's actions or behavior. A cleaned up act is a sign of growth and maturity, while the opposite is indicative of stagnation or even regression. It is essential to strive for a cleaned up act in all aspects of life, whether it be personal or professional, to create a positive and productive environment.