ostentation

Synonyms: affectation array boast boasting brag braggadocio bragging bravado demonstration display exhibition false front flamboyance flash flaunting flourish fuss garishness grandstand play magnificence pageant pageantry parade parading pomp pomposity pompousness pretending pretension pretentiousness put-on shine show showiness showing off showoff spectacle splendor splurge swagger swaggering swank vainglory vaunt vaunting window-dressing

Antonyms: modesty plainness quiet reservation