While "storming out" often implies frustration, anger, or impatience, there are a number of antonyms that indicate a more measured or polite exit. These might include "excusing oneself," "bowing out," "departing gracefully," "withdrawing cordially," "leaving respectfully," or "taking one's leave." Each of these terms emphasizes a sense of propriety or consideration for those who may be affected by one's departure, and may be appropriate for situations like formal dinners, diplomatic meetings, or professional interviews. Ultimately, selecting the right antonym for "storming out" depends on the tone and context of the situation, as well as the level of respect and consideration one wishes to convey.