IPA: /krɪˈdʒuːləsli/
KK: /ˈkrɛdʒələsli/
In a way that shows a tendency to believe things too easily or without enough evidence.
She credulously accepted the story without questioning its truth.
Credulously → It is formed from "credulus" (from Latin, meaning easily convinced or trusting) and the suffix "-ly" (meaning in a manner of). The word "credulously" means in a manner that shows a tendency to believe too readily or easily.
Think of being easily convinced ('credulus') and how that leads to believing things too readily — that's what it means to act credulously.