The phrase "hath fun" is old English for "to have fun". Its antonym would be "not having fun" or "being bored". Other antonyms of "hath fun" could include "miserable", "depressed", "unhappy", "sorrowful", or "morose". However, it's important to remember that fun is a subjective concept, and what one person finds enjoyable, another may find tedious. Therefore, it's always best to communicate and understand what brings joy to individuals around us. So, instead of focusing on antonyms for "hath fun", let's strive to create opportunities for people to have fun in their own way.