Antonyms of noun atheism

1 of 2 senses of atheism

Sense 1
atheism, godlessness -- (the doctrine or belief that there is no God)
       Antonym of theism (Sense 1)
      => theism -- (the doctrine or belief in the existence of a God or gods)

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

2 senses of atheism

Sense 1
atheism, godlessness -- (the doctrine or belief that there is no God)
       => religious orientation -- (an attitude toward religion or religious practices)

Sense 2
atheism -- (a lack of belief in the existence of God or gods)
       => unbelief, disbelief -- (a rejection of belief)