deist/ˈdeɪ.ɪst/EtymologyFrom French déiste, from New Latin deista, from Latin Deus (“God”) + -ista (“-ist”).deist means of or relating to deism and deists. Lexicurio rates it Rare gem — a strength score of 81 out of 100.adjOf or relating to deism and deists.nounA person who believes in deism.“It was reason that led most of the Enlightenment thinkers to repudiate a belief in an anthropomorphic God who took an interest in human affairs.⁶ The application of reason revealed that reports of miracles were dubious, that the authors of holy books were all too human, that natural events unfolded with no regard to human welfare, and that different cultures believed in mutually incompatible deiti”nameA surname from German.