The phrase "got square" can mean a wide variety of things depending on the context in which it is used. Synonyms for this phrase might vary depending on the meaning behind it. For instance, if it is used to suggest that someone has settled a score or gotten even with someone, then synonyms such as "retaliated," "avenged," or "recompensed" might be appropriate. If it is used to suggest that someone has reached a state of balance or fairness, then synonyms such as "equalized," "stabilized," or "harmonized" could be used. In any case, the phrase "got square" indicates a sense of completion or satisfaction that can be expressed using a wide range of different words.