[ os-ten-tey-shuhs, -tuhn- ]
See synonyms for: ostentatiousostentatiouslyostentatiousness on Thesaurus.com

  1. characterized by or given to pretentious or conspicuous show in an attempt to impress others: an ostentatious dresser.

  2. (of actions, manner, qualities exhibited, etc.) intended to attract notice: Lady Bountiful's ostentatious charity.

Origin of ostentatious

First recorded in 1650–60; ostentat(ion) + -ious

synonym study For ostentatious

1. See grandiose.

Other words from ostentatious

  • os·ten·ta·tious·ly, adverb
  • os·ten·ta·tious·ness, noun
  • un·os·ten·ta·tious, adjective
  • un·os·ten·ta·tious·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ostentatious in a sentence

  • Ostentatiousness had, I am afraid, more to do with it than love of art for art's sake.

  • But it would be a great mistake to infer that this ostentatiousness of authority concealed real servility.

    Swift | Leslie Stephen

British Dictionary definitions for ostentatious


/ (ˌɒstɛnˈteɪʃəs) /

  1. characterized by pretentious, showy, or vulgar display

Derived forms of ostentatious

  • ostentatiously, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012