Adjective unbelieving has 3 senses
  1. atheistic, atheistical, unbelieving - rejecting any belief in gods
    Antonym: religious (indirect, via irreligious)
  2. nescient, unbelieving - holding that only material phenomena can be known and knowledge of spiritual matters or ultimate causes is impossible
    Antonym: gnostic (indirect, via agnostic)
  3. disbelieving, skeptical, sceptical, unbelieving - denying or questioning the tenets of especially a religion; "a skeptical approach to the nature of miracles"
    Antonym: credulous (indirect, via incredulous)
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