When it comes to standing up for someone or defending them, there are various synonyms for the phrase "stick up for". These include words like champion, advocate, support, uphold, back, defend, and promote. Each word signifies a different level of support, ranging from simply lending a voice in defense to actively fighting for someone's cause. These synonyms can be useful in different situations, such as in personal relationships, political discourse, or legal battles. Nonetheless, regardless of the word used, ensuring that one's action of sticking up for someone else is done with empathy, fairness, and respect is always essential.