Antonyms of noun monotheism

1 sense of monotheism

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

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

1 sense of monotheism

Sense 1
monotheism -- (belief in a single God)
       => theism -- (the doctrine or belief in the existence of a God or gods)