Definition of bravado noun from the Oxford Advanced American Dictionary

 

bravado

 noun
noun
NAmE//brəˈvɑdoʊ//
 
[uncountable]
 
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a confident way of behaving that is intended to impress people, sometimes as a way of hiding a lack of confidence an act of sheer bravado “Don't threaten me,” she whispered with false bravado.
See the Oxford Advanced Learner's Dictionary entry: bravado