IPA: /krɪˈdjuːləti/
KK: /krɛˈdjuːləti/
A tendency to believe things too easily or without enough evidence.
Her credulity made her an easy target for scams.
Credulity is formed from "credulus" (meaning easily believing) and the suffix "-ity" (meaning the state or quality of). The word refers to the quality of being too ready to believe things, often without sufficient evidence.
Think of someone who is 'easily believing' ('credulus') — that's why credulity means the quality of being too ready to believe.