1. in a manner showing a tendency to believe things too easily; without sufficient evidence or skepticism

Examples

• She credulously accepted the stranger's story without asking any questions.
• The audience credulously believed every claim the salesman made about the product.
• He credulously assumed that all online reviews were honest and unbiased.
• They credulously followed the instructions without verifying them first.
• The child credulously accepted the explanation, not realizing it was false.
• She credulously invested her savings based on a tip from an unreliable source.