Synonyms of gullibility
credulityCredulity is a willingness to believe that something is real or true.
• The plot stretches credulity to the limits.
gullibilitynaïveté or naivetyblind faithcredulousness
innocenceInnocence is the quality of having no experience or knowledge of the more complex or unpleasant aspects of life.
• the sweet innocence of youth
Thesaurus for gullibility from the Collins English Thesaurus