There are several synonyms for the phrase "pays the piper," a common English idiom that means to accept the consequences of one's actions. One could say that someone "sows the seeds" or "reaps what they sow" in lieu of "paying the piper." Another similar phrase is "robbing Peter to pay Paul," which means to take from one thing or person to give to another, resulting in a negative consequence. One could also use the phrase "facing the music" to mean accepting the outcomes of one's choices. Overall, these synonyms emphasize the importance of being accountable for one's actions and taking responsibility for the consequences that may follow.