Incredulity
Part of speech: noun
Definition: Unwillingness or inability to believe; doubt about the truth or verisimilitude of something; disbelief. Religious disbelief, lack of faith.
Skepticism
Part of speech: noun
Definition: The practice or philosophy of being a skeptic.A studied attitude of questioning and doubtThe doctrine that absolute knowledge is not possibleA methodology that starts from a neutral standpoint and aims to acquire certainty though scientific or logical observation.Doubt or disbelief of religious doctrines
Example sentence: The logic of validation allows us to move between the two limits of dogmatism and skepticism.