Definition of antitheist in US English:

antitheist

adjective

  • Opposed to belief in the existence of a god or gods.

    ‘I'm not so much atheist as antitheist’

noun

  • A person who is opposed to belief in the existence of a god or gods.

    ‘he is an ardent antitheist’

Pronunciation

antitheist

/ˌan(t)ēˈTHēist//ˌæn(t)iˈθiɪst/