"Gotten square" is a phrase commonly used to describe someone who has gotten even or achieved justice. There are many synonyms for this phrase that can be used interchangeably. One option is "getting their just desserts," which means that someone is receiving what they deserve for their actions. Another synonym is "getting even," which implies that someone is retaliating after being wronged. "Reaping what one sows" is another phrase that can be used to describe someone who has gotten square, as it implies that someone is facing the consequences of their actions. Other synonyms include "balancing the scales," "settling the score," and "getting payback." All of these phrases emphasize the idea of someone getting their due justice.