Antonyms of noun polytheism

1 sense of polytheism

Sense 1
polytheism -- (belief in multiple Gods)
       Antonym of monotheism (Sense 1)
      => monotheism -- (belief in a single God)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun polytheism

1 sense of polytheism

Sense 1
polytheism -- (belief in multiple Gods)
       => theism -- (the doctrine or belief in the existence of a God or gods)