adjective 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.
Related forms 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