Antonyms for the phrase "cleans up one act" include neglect, disregard, and ignore. Neglecting one's actions can result in messy and unorganized behavior that may negatively impact one's personal and professional life. Disregarding ethical responsibilities can lead to dishonest and unethical behavior that can be detrimental to relationships and trust. Lastly, ignoring negative habits and patterns can lead to a lack of personal growth and hinder success in various aspects of life. To avoid these negative outcomes, one should actively address and improve their behavior through personal reflection and self-discipline.