Credulous

Despite the lack of evidence, the credulous man readily accepted the claim that aliens had visited Earth.

The credulous audience was captivated by the magician's illusion and believed he had made the rabbit disappear.

The credulous job applicant was easily swayed by the interviewer's flattery, despite the questionable company reputation.

The credulous sports fan believed the exaggerated claims of a new training program that promised instant athletic success.

The credulous customer bought into the marketing hype and purchased a trendy product that turned out to be of poor quality.