Autotheism refers to the belief that an individual is a god unto themselves. While there are no direct synonyms for this specific term, there are related words that can be used to describe similar ideas. Self-worship, self-idolization, self-deification, and self-divinization are all related concepts that could be used in place of autotheism. These terms all convey the idea of placing oneself above others and elevating oneself to a god-like status. Other related words might include self-importance, narcissism, or megalomania. Regardless of the specific term used, the concept of self-worship and self-deification is often seen as a negative and problematic approach to life and spirituality.