credulousness

credulous +‎ -ness

• (Received Pronunciation) IPA^(key): /ˈkɹɛd͡ʒələsnəs/, /ˈkɹɛd͡ʒʊləsnəs/
• (General American) IPA^(key): /ˈkɹɛd͡ʒələsnəs/

credulousness (uncountable)

1. The characteristic or state of being credulous; credulity
   • 1911, Ernest Jones, "The Psychopathology of Everyday Life", The American Journal of Psychology, vol. 22 no 4 (Oct), pp. 525-6,

     Credulousness is always more harshly judged than incredulousness, though they are both merely different aspects of the same fundamental failing, namely, lack of true scepticism.

   Synonyms: credulosity (uncommon), credulity, gullibility

• gullibility

• credulousness in An American Dictionary of the English Language, by Noah Webster, 1828.
• credulousness in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• “credulousness”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.