WordReference Random House Learner's Dictionary of American English © 2014
os•ten•ta•tion /ˌɑstɛnˈteɪʃən, -tən-/USA pronunciation  n. [uncountable]

    a false or overly grand display of wealth meant to impress others.

Collins Concise English Dictionary © HarperCollins Publishers::

ostentation /ˌɒstɛnˈteɪʃən/ n
  1. pretentious, showy, or vulgar display

'ostentation' also found in these entries:
In the English description:

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