upper class
US /ˌʌp.ɚ ˈklæs/
UK /ˌʌp.ɚ ˈklæs/

1.
the social group at the highest level in society, typically consisting of people with inherited wealth, high social status, and often aristocratic titles
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The novel satirizes the manners and customs of the upper class.
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She was born into an upper class family.
1.
relating to or characteristic of the upper class
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He spoke with an upper class accent.
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The restaurant has an upper class clientele.