Antonyms for "doing one's part" include neglecting, ignoring, procrastinating, avoiding, and shirking. Neglecting means not giving proper attention or care to a task. Ignoring means intentionally disregarding or paying no attention to a responsibility. Procrastinating is postponing or delaying a task beyond its deadline. Avoiding is actively evading or dodging responsibilities. Shirking is avoiding or neglecting obligations or duties intentionally. Antonyms in this context suggest a lack of responsibility, disregard of duties, or an unwillingness to contribute, which is the opposite of doing one's part. It is, therefore, important to cultivate a culture of responsibility and accountability to avoid any form of negative antonyms associated with "doing one's part.