The phrase "be of same mind" means to have a shared opinion or belief with someone else. Some opposite words for this phrase include "disagree," "oppose," "dissent," "differ," and "contradict." When two or more people are not of the same mind, it can create conflict or disagreement. While having differing opinions is natural, finding a way to respect and understand the viewpoints of others is essential for effective communication and relationships. By acknowledging and accepting differences, people can work towards meaningful compromise and collaboration.