The antonyms for the word "stewed over" could be "forgotten," "let go," "moved on," "released," or "resolved." These are all words that reflect a positive and healthy approach to dealing with difficult situations. Instead of stewing over an issue, it is better to acknowledge it, address it, and then move forward. Dwelling on something negative for too long can be detrimental to one's mental and emotional wellbeing. Learning to let go of things that cannot be changed and focusing on the present can bring peace of mind and allow for personal growth.