Synonyms of disbelief

1 Syllable
doubt
2 Syllables
spurning, mistrust, unfaith, distrust, atheism
3 Syllables
nihilism, heresy, unbelief, nonbelief, heresies, skepticism, faithlessness, godlessness, nihilisms, rejection, paganism, dubiety, leeriness
4 Syllables
secularism, traitorousness, revisionism, agnosticism, irreligion, repudiation
5 Syllables
unbelievingness, incredulity