When it comes to finding synonyms for the phrase "not subject," there are quite a few options to choose from. Some of the most common synonyms include "immune," "exempt," "untouchable," "unaffected," and "impervious." Each of these words implies a sense of protection or invincibility, whether it's from the forces of nature, the rules of society, or the whims of other people. By using these synonyms in place of "not subject," you can add variety and depth to your writing, while also conveying a nuanced sense of meaning and perspective. So the next time you come across the phrase "not subject," don't be afraid to experiment with some of these alternatives!