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

   Synonyms: credulosity (uncommon), credulity, gullibility

   • 1911 Oct, Ernest Jones, “The Psychopathology of Everyday Life”, in The American Journal of Psychology, volume 22, number 4, pages 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.

• gullibility

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