American English

Definition of bloviate from the Oxford Advanced American Dictionary

 

bloviate

 
NAmE//ˈbloʊviˌeɪt//
 
[intransitive] (informal) (disapproving)
 
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to talk or write in a way that shows that you think you know a lot and have something important to say, when in fact you do not know much and have nothing important to say All radio talk show hosts blab and bloviate about national security.
See the Oxford Advanced Learner's Dictionary entry: bloviate