The phrase "more underdog" implies that there is a greater level of disadvantage or lack of support compared to an already existing underdog. Some possible antonyms for this phrase could be "favorite," "dominant," "successful," or "privileged." These words suggest a position of power, advantage or success. Alternatively, antonyms could include "equal," "matched," or "evenly matched," indicating that both parties are in a similar position of strength. While being an underdog can have its advantages, such as the support and motivation that can come from being the "little guy," it is important to acknowledge that there are different perspectives and interpretations of the same situation.