The word "most aflutter" implies excitement or nervousness, but what would be its antonyms? Antonyms for "most aflutter" would be words that describe calmness or serenity. Some possible antonyms include: composed, tranquil, peaceful, placid, relaxed, serene, and stoic. These words all connote a sense of stillness and quietude rather than turbulent activity. While "most aflutter" may describe a heightened emotional state, its antonyms suggest an absence of such intensity. By utilizing antonyms, we can better demonstrate the nuances and shades of meaning inherent in language.