The word "calescent" means growing warmer or increasing in heat. Therefore, antonyms for "more calescent" would be words that describe the opposite, such as "cooler," "colder," "freezing," "frigid," "chilly," "frosty," "icy," "fresh," or "brisk." These words could be used to describe a cold, windy winter day or a refreshing dip in a cool lake on a hot summer day. Antonyms for "more calescent" can help to add variety to descriptions and allow for a wider range of tone and mood in writing or speech.