Synonyms for ostentation

noun

1. The quality of being ostentatious

   exhibitionism, showiness, pomp, pompousness, pomposity, parading, bravado, vaunting, magnificence, pageant, pageantry, splendor, spectacle, flourish, flamboyance, garishness, array, demonstration, pretending, boasting, bragging, swaggering, vainglory, braggartism; see also pretense 1.

   Antonyms reserve*, diffidence, timidity.

2. Ostentatious conduct

   show, display, brag, boast, vaunt, swagger, flourish, parade, fuss, exhibition, braggadocio, pretension; see also display 2, vanity 1.

   Antonyms reserve*, modest behavior, quiet.