Living with someone can be an interesting and meaningful experience. The phrase 'be roommates with' commonly used to refer to the act of sharing a living space with someone. However, if you are tired of using the same words over and over again, here are some synonyms you can use instead: cohabit with, share a roof with, live together with, reside with, dwell with, bunk with, room with, board with, lodge with, and inhabit with. Using different words to mean the same thing can help you to diversify your writing or speech. So, choose the synonym that resonates best with your personality and style, and make your language more vibrant and expressive!