Antonyms for the phrase "stews over" would indicate the opposite of overthinking, obsessing, or worrying. Instead, words like "let go," "release," and "move on" would be more fitting. These antonyms suggest a sense of calm and acceptance, rather than dwelling on negative thoughts or feelings. Other possible antonyms could include words like "forgive," "accept," and "understand," indicating a willingness to let things be rather than holding onto them. By focusing on these antonyms, we can cultivate a more positive perspective and reduce stress and anxiety in our lives.