A Dogmatizer is a person who insists on their own beliefs and opinions being the undisputed truth. They might be seen as stubborn or difficult to work with. Synonyms for Dogmatizer include opinionated, inflexible, uncompromising, rigid, unyielding, doctrinaire, and authoritarian. Other words to describe a Dogmatizer could include fanatical, dogmatic, and close-minded. These individuals often view their ideas as the only acceptable way of thinking, which can create tension and disagreement in personal and professional relationships. While it is important to stand up for one's beliefs, there is a balance between being confident and being a Dogmatizer.