The term "most phoenixlike" represents a powerful and vibrant image of a mythical bird rising from its ashes, symbolizing renewal and transformation. However, the opposite antonyms of this phrase could offer different perspectives and meanings. Some possible antonyms could be "least resilient," "non-reviving," "unregenerating," or "unrejuvenating," emphasizing the lack of renewal or transformation. Alternatively, "uninspiring," "dull," or "lifeless" could portray the absence of strength or vibrancy. Using antonyms can provide contrast and depth to the original phrase, highlighting different shades of meaning and offering a broader understanding of the concept.