There are several synonyms for the phrase "taking one side." Some examples include siding with, aligning oneself with, supporting, championing, advocating for, defending, favoring, and espousing. These words indicate a strong position in favor of a particular viewpoint, often in opposition to another perspective. While it is important to have one's own beliefs and stand up for them, it is also important to listen to opposing viewpoints and engage in respectful dialogue. By doing so, individuals can gain a broader understanding of complex issues and work towards finding common ground.