The antonyms for the phrase "doing one's part" could be neglecting responsibilities, shirking duties, or being indifferent. When someone neglects their responsibilities, they are not fulfilling their obligations and might be causing harm or inconvenience to others who depend on them. Shirking duties means avoiding responsibilities purposely, which may also lead to negative consequences. Being indifferent means not caring about the task at hand, which is a form of apathy and disinterest. In contrast, doing one's part is a sign of being responsible, reliable, and committed. When everyone plays their role, it helps to achieve a common goal, and the outcome is often successful.
