The antonyms for the word "most ruffled" are "calm", "smooth", "composed", "serene", "tranquil", and "unruffled." These words denote a sense of peace, control, and orderliness, which is the opposite of being ruffled. When someone is unruffled, they are calm and collected, without any signs of agitation or distress. On the other hand, when something is smooth, it is free of any bumps, lumps, or wrinkles that may cause unease. When one is serene, they are peaceful and tranquil, with a sense of quietness and composure. Therefore, the antonyms of "most ruffled" are a diverse group of words that convey a sense of serenity and calmness.