Assertors are individuals who maintain and uphold a particular belief or opinion, often in a strong and forceful manner. Other words that can be used as synonyms for assertors include advocates, champions, defenders, proponents, supporters, and stalwarts. Each of these words conveys the idea of someone who is committed to promoting and defending a certain idea or position, often in the face of opposition or criticism. Whether you are referring to a political activist, a social advocate, or a religious leader, these synonyms for assertors can help you convey the specific nuances of a person's beliefs, actions, and attitudes.