aristocratic; noble; patrician
Describes a person, manner, lifestyle, or atmosphere that is refined, elegant, and characteristic of the aristocracy.
She has an aristocratic air about her.
The hotel is known for its aristocratic decor.
貴族的 describes an aristocratic, elite quality, directly contrasting with the common, ordinary-people feel of 庶民的.
Formed from 貴族 (nobility, aristocrat) + 的 (-like, -ic), a common pattern for creating adjectival nouns.