ostentation /ˌɑːstənˈteɪʃən/ noun Learner's definition of OSTENTATION
[noncount] disapproving
: an unnecessary display of wealth, knowledge, etc., that is done to attract attention, admiration, or envy炫耀；招摇 -
The actress avoids ostentation. She owns a small house and drives an inexpensive car.那位女演员不愿意炫耀。她住的是小房子，开的是经济型轿车。
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She dressed stylishly without ostentation. [=she dressed in a way that was simple yet attractive]她穿着高雅而不招摇。
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He writes simply and clearly and without ostentation.他的文字简洁明了不加粉饰。