Most panting is a phrase used to describe someone who is breathing heavily due to exertion, fatigue, or excitement. The antonyms for most panting would be words that describe calmness, tranquility, or ease. Some antonyms for most panting might include words like relaxed, peaceful, calm, cool, or composed. These words are often used to describe someone who is not under stress, is not feeling anxious or nervous, and is generally at ease. When looking for antonyms for most panting, it's important to keep in mind the context in which the phrase is being used, as different situations may require different antonyms.