Attitudinarianism refers to a rigid adherence to a particular set of attitudes, beliefs or opinions, without considering other viewpoints. Some synonyms for attitudinarianism include dogmatism, intolerance, inflexibility, close-mindedness, and rigidity. Other related terms include obstinacy, stubbornness, and resistance to change. These terms all describe a reluctance to consider different perspectives or to accept new ideas. Antonyms for attitudinarianism include flexibility, open-mindedness, and adaptability. These traits describe a willingness to consider different viewpoints and be receptive to new ideas. A person who embodies these traits is more likely to be successful in life and in their relationships with others.