The phrase "am on one's case" typically means that someone is being criticized or pressured to do something. Antonyms for this phrase would be "off someone's case" or "leaving someone alone." These phrases convey a sense of respect for one's autonomy and a willingness to give them space. Other antonyms could include "supporting someone's decision" or "encouraging someone's path," which convey positivity and a desire to help someone achieve their goals. It's important to remember that our language choices can greatly impact how we interact with others, and choosing more positive and empowering antonyms can lead to healthier relationships and better outcomes.