The phrase "cleans one's act" means to improve oneself and become more responsible. However, the antonyms for this phrase would be to worsen or neglect oneself. For example, if someone does not take any constructive steps to change their behavior, they could be seen as neglecting their act. Similarly, if someone engages in destructive or harmful behavior, this could be seen as actively worsening their act. Other antonyms for "cleans one's act" could include being irresponsible, careless, inconsiderate, or reckless. It is important to strive to "clean one's act" in order to be a better person, but it is equally important to avoid behaviors that could lead to the opposite.
