The term "gotten the better of" implies that one has triumphed over someone else or has emerged victorious in a particular scenario. Its antonyms, on the other hand, signify the opposite of winning or dominating. The phrase "lost to" is a common antonym used for "gotten the better of." It means that someone has been defeated or outdone by someone else. "Submitted to" can also be considered an antonym for "gotten the better of" because it suggests giving in or accepting defeat. Other antonyms that come to mind are "inferior to," "under the power of," "outmatched by," and "overpowered by," all of which denote a sense of being at a disadvantage or being overwhelmed.