Synonyms for the phrase "in the right" can be used to express someone's correctness or moral authority in a given situation. One synonym is "justified", which signifies that the actions or beliefs of an individual are grounded in principles of fairness and reason. Another alternative is "righteous", implying adherence to ethical standards or moral correctness. Additionally, "valid" can be used in contexts where a person's arguments or positions are logical, verifiable, and supported by evidence. "Legitimate" serves as another synonym that emphasizes the lawfulness or authenticity of a person's claims, actions, or authority. These synonyms highlight the various nuances of being in the right, providing a diverse vocabulary to articulate someone's correctness or moral standing.