There are several synonyms for the phrase "are one's back." This phrase typically refers to someone who is supporting or defending another person. Some synonyms include "have someone's back," "stand by someone," "support someone," "defend someone," "aid someone," and "back someone up." These phrases all convey the idea of being there for someone and helping them through a difficult situation. Whether it's a friend, family member, or colleague, having someone's back is an important part of building strong relationships and creating a supportive community. So, the next time someone asks you if you have their back, you can confidently say, "Yes, I've got you covered".