The opposite of "more guilt free" would be "less guilt free" or "more guilty." It refers to a state where one feels remorseful or accountable for their actions, typically when they have acted against their values or moral standards. Some synonyms for "guilty" include culpable, blameworthy, and reprehensible. Antonyms for "guilty" would be innocent, blameless, and faultless. Feeling less guilt-free can arise from a variety of situations, including breaking the law, betraying someone's trust, or going against one's personal beliefs. It is essential to strive for guilt-free living, where one's actions align with their values and principles, and they can face themselves without remorse.