misotheism (n.)

word-forming element of Greek origin meaning "hater, hatred," before vowels, mis-, from Greek misos "hatred," misein "to hate," of uncertain etymology, perhaps from a Pre-Greek word. It was productive as a word-forming element in ancient Greek, for instance misoagathia "hatred of good or goodness;" misoponein "to hate work." In English it formed many compounds now obscure or recherche, but some perhaps still useful, such as  misocapnic (adj.) "hating (tobacco) smoke," misocyny "hatred of dogs," misoneism "hatred of novelty."

word-forming element meaning "belief (of a specified kind) in God, a god, or gods," from Greek theos "god" (from PIE root *dhes-, forming words for religious concepts) + -ism.