The antonyms for the word "more stormless" could be "stormy" or "tempestuous." These adjectives describe weather conditions that are turbulent and unpredictable, with high winds and heavy rainfall. Stormy weather can be dangerous and destructive, causing flooding, power outages, and property damage. On the other hand, calm and serene weather conditions could be described using the antonyms "peaceful," "serene," or "tranquil." These adjectives convey a sense of stillness and quiet, with little or no wind, rain, or other disruptive weather patterns. In summary, while "more stormless" refers to an absence of storms, its antonyms describe various degrees of stormy or calm weather conditions.