1) Belief 2) Bigotry 3) Credulousness 4) Cullibility 5) French word used in English 6) Gross credulity 7) Gullibility 8) Hyperorthodoxy 9) Infatuation 10) Misjudgment 11) Self deception 12) Self delusion 13) Superstition 14) Tendency to believe readily 15) Trust 16) Trustfulness 17) Trustingness 1) Naivete 2) Overcredulity 
Credulity is a state of willingness to believe in one or many people or things in the absence of reasonable proof or knowledge. Credulity is not simply belief in something that may be false. The subject of the belief may even be correct, but a credulous person will believe it without good evidence. ==Meaning== The words gullible and credulous are ...
• (n.) Readiness of belief; a disposition to believe on slight evidence.
Cre·du'li·ty noun [ Latin credulitas , from credulus : confer French crédulité . See Credulous .] Readiness of belief; a disposition to believe on slight evidence. « That implict credulity is the mark of a feeble mind will not be disputed. Sir W. Hamilt...
too great a readiness to believe things 
[n] - tendency to believe readily
credulity 1. The tendency to believe something too readily. 2. An over-readiness to believe; a disposition to believe on weak or even insufficient grounds. I never cease being dumfounded by the unbelievable things people believe. —Leo Rosten
noun tendency to believe readily
willingness to believe or trust too readily, esp. without proper or adequate evidence; gullibility.