The phrase "most bushytailed" is used as a playful expression to describe someone who is energetic and enthusiastic. However, when looking for antonyms to this phrase, we might consider words that are associated with boredom or lethargy, such as languid, listless or sluggish. Other options could also include words such as tired, apathetic or jaded which may describe a lack of enthusiasm or energy. Alternatively, antonyms could take a more literal approach, such as an animal with a short, stubby tail instead of a bushy one. In any case, antonyms for "most bushytailed" will vary depending on the context and intended meaning.