ˈfaschəwəs adjective
Etymology: French or Latin; French fastueux, from Latin fastuosus, from fastus pride, arrogance + -osus -ose; akin to Latin fastigium top, extremity — more at bristle
1. : haughty , arrogant , prideful
a fastuous air of finality — Carl Van Vechten
2. : ostentatious , showy
the most fastuous spectacle ever offered in the present opera house — Janet Flanner
the fastuous pomps and magnificence of ancient Carthage — Times Literary Supplement
• fas·tu·ous·ly adverb