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ostentation

英/ˌɒstəntˈeɪʃən/
美/ˌɔstɛnˈteɪʃən/
01n.

虚饰, 虚有其表, 卖弄

a gaudy outward display; lack of elegance as a consequence of being pompous and puffed up with vanity; pretentious or showy or vulgar display