Most festal refers to something that is extremely joyful, exuberant, and celebratory. To find antonyms for this word, we need to look for words that denote the opposite meaning. Some possible antonyms for the term most festal could be dour, bleak, somber, mournful, or melancholy. These words imply a lack of enthusiasm, cheerfulness or liveliness, contrasting with the joy and excitement that most festal conveys. Whether we refer to people, events, or expressions, the antonyms of most festal suggest a state of mind that is less festive, less energetic, and less vibrant, indicating a more subdued or melancholic feeling.