(n.) Readiness to believe on slight evidence; credulity.

credulity credulousness disposition to believe dotage ease of belief fondness gross credulity infatuation overcredulity overcredulousness overopenness to conviction overtrustfulness rash conviction trustfulness uncritical acceptance uncriticalness unquestioning belief unripe acceptation unskepticalness unsuspectingness unsuspiciousness will to believe willingness to believe wishful belief wishful thinking