Autotheistic refers to the belief that one is God or has divine powers within oneself. Synonyms for autotheistic are self-deification or self-divinization. Some other related words include egotheism, narcissism, and solipsism. These terms are often used to describe individuals who have grandiose beliefs in their own abilities and superiority over others. However, it's important to note that autotheistic beliefs are not necessarily negative or harmful, and can be seen as a way of attaining spiritual enlightenment or self-realization. As with any belief, it is important to approach autotheistic concepts with an open mind and respect for different perspectives.