Noun
unbelief (usually uncountable, plural unbeliefs)
- An absence (or rejection) of belief, especially religious belief
1931, William Faulkner, Sanctuary, Vintage, published 1993, page 35:On hands and knees he looked at the empty siding and up at the sunfilled sky with unbelief and despair.
2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 781:Soon Spinoza was regarded as the standard-bearer for unbelief, even though pervading his carefully-worded writings there is a clear notion of a divine spirit inhabiting the world, and a profound sense of wonder and reverence for mystery.