Most debated refers to a topic, issue or subject that has been discussed and argued about extensively. There are several synonyms for the word most debated, including controversial, disputed, contentious, hotly contested, disputed, divisive, and polarizing. These words describe topics that are often surrounded by divergent opinions, conflicting views, and passionate arguments. Issues like Brexit, climate change, gun laws, and abortion rights are some examples of topics that fall under this category. While most debated topics can lead to healthy and productive debates, they can also be a source of division, disagreements, and tension.