The phrase "hadst a case" means to have a problem or issue that needs to be addressed. The antonyms for this phrase would be to not have a problem or issue or to have a solution for the existing problem. Some words that could be used as antonyms include "resolved," "settled," "content," "satisfied," "calm," "peaceful," "rested," or "untroubled." When someone says they no longer "hadst a case," it means their problem has been resolved, and they are no longer worried or stressed about it. It is important to remember that when using antonyms, context matters, and it's essential to choose the right word for the situation.