IPA: /ˈærɪstəˌkræt/
KK: /ˈærɪstəˌkræt/
A person who belongs to a high social class, often with special privileges and wealth, usually inherited from family.
The aristocrat attended the gala in a lavish gown and surrounded by luxury.
Aristocrat → It is formed from "aristo-" (from Greek "áristos", meaning best or excellent) and "-crat" (from Greek "kratos", meaning power or rule). The word refers to a person of the best or highest class in society, holding power or influence.
Think of 'the best' ('aristo-') having 'power' ('-crat') — that's why an aristocrat is someone from the highest class.