Upper-cruster is a term that refers to members of the upper-class who live a luxurious life and are often involved in high-society events. However, there are several synonyms for this word that are used interchangeably to represent this social group. These synonyms include highbrow, elite, posh, aristocrats, blue bloods, upper-crust, snobs, and refined. These words carry different connotations, but they all create a portrait of a person who enjoys extravagant living and privileges that come along with their social status. Each synonym brings a distinctive meaning to the table, but they signify the same idea of a person who belongs to the upper echelon of society.