There are a few synonyms for the word "physitheism," which means the worship or belief in physical bodies as divinity or gods. One possible synonym is "corporealism," which refers to the belief in the reality or importance of physical objects or phenomena. Another word that can be used as a synonym for "physitheism" is "materialism," which refers to the belief that physical matter or energy is the fundamental reality of the universe. However, it is important to note that these words have different nuances and implications and should be used with care when discussing religious or philosophical beliefs.