Definition of disbelief noun from the Oxford Advanced American Dictionary

 

disbelief

 noun
noun
NAmE//ˌdɪsbɪˈlif//
 
[uncountable]
 
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the feeling of not being able to believe something He stared at me in disbelief. To enjoy the movie you have to suspend your disbelief (= pretend to believe something, even if it seems very unlikely). compare belief, unbelief
See the Oxford Advanced Learner's Dictionary entry: disbelief