Definition of ostentation noun from the Oxford Advanced Learner's Dictionary

 

ostentation

 noun
noun
BrE BrE//ˌɒstenˈteɪʃn//
 
; NAmE NAmE//ˌɑːstenˈteɪʃn//
 
[uncountable](disapproving)
 
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an exaggerated display of wealth, knowledge or skill that is made in order to impress people The house was spacious but without any trace of ostentation. Word Origin late Middle English: via Old French from Latin ostentatio(n-), from the verb ostentare, frequentative of ostendere ‘stretch out to view’.
See the Oxford Advanced American Dictionary entry: ostentation