Deistical is an adjective that describes a person who believes in the existence of God, but does not believe in organized religion or the divine authority of religious texts. It is a rarely used word in modern language, and there are several synonyms that can be used in its place. Some examples include non-religious, atheist, agnostic, secular, non-theistic, freethinking, and rationalist. These words all describe a person who does not necessarily reject the idea of God, but rather chooses to interpret it differently or reject religious doctrine. Depending on the context, any of these synonyms can be used in place of deistical to convey a similar meaning.