The antonyms for the word "more rumbunctious" are calm, docile, placid, peaceful, sedate, relaxed, tranquil, and serene. While rumbunctious implies a noisy and energetic behavior, antonyms such as calm and peaceful suggest a much more subdued and composed demeanor. Docile and placid indicate a meek or gentle state of being, while sedate and relaxed refer to a more moderate and mellow temperament. Tranquil and serene suggest a sense of peacefulness and serenity, indicating a lack of disturbance or agitation. Overall, contrasting the word "more rumbunctious" with these antonyms helps to highlight the range of behavior and temperaments that individuals can exhibit.