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Noun: ostentatiousness  ,ós-tun'tey-shus-nus or ,ós,ten'tey-shus-nus
  1. Lack of elegance as a consequence of being pompous and puffed up with vanity
    "a charming host without any touch of stiffness or ostentatiousness";
    - ostentation, pomposity, pompousness, pretentiousness, puffiness, splashiness, inflation

Type of: inelegance