This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A disposition to believe too readily.

n. A willingness to believe in someone or something in the absence of reasonable proof; credulousness.

n. Readiness of belief; a disposition to believe on slight evidence.

n. A weak or ignorant disregard of the nature or strength of the evidence upon which a belief is founded; in general, a disposition, arising from weakness or ignorance, to believe too readily, especially impossible or absurd things.

n. Synonyms Fanaticism, Bigotry, etc.

n. See superstition.

n. tendency to believe readily

"A wife whose mind was oriented in the new direction effectually silenced her husband's ridicule of what he called her credulity by reminding him that when wireless telegraphy was first suggested he had exclaimed, "Ah, that, you know, is one of the things that is not possible!""

incredulity   

trust    trustfulness    trustingness   

credulousness    credulous   

overcredulity   

believingness   

obstinacy    avarice    folly    stupidity    levity    superstition    egotism    conceit    carelessness    imbecility