gullibility

readiness to believe the claims of others without sufficient evidence teased her about her well-known gullibility by repeatedly offering to sell her the Continental Divide Synonyms credulousness, credulity, naiveness, naïveté (also naivete or naiveté), simplenessRelated Words artlessness, simplicity, unsophistication, unwariness, unworldliness; belief, credibility, faith, trustNear Antonyms sophistication, worldliness; distrust, misdoubt, mistrust, suspicion, suspiciousness, wariness; doubt, uncertaintyAntonyms incredulity, skepticism