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THESAURUS

RELATED WORDS : crust earth's crust pie crust stiff upper lip upper upper avon upper avon river upper balcony upper berth upper bound upper cannon upper carboniferous upper carboniferous period upper case upper class upper deck upper egypt upper hand upper house upper jaw upper jawbone upper limit upper mantle upper paleolithic upper peninsula upper respiratory infection upper respiratory tract upper side upper surface upper tunguska upper volta

WORDNET DICTIONARY

Noun upper crust has 1 sense

• upper crust(n = noun.group) upper class - the class occupying the highest position in the social hierarchy; Array
is a kind of class, social class, socio-economic class, stratum
has particulars: elite, elite group, aristocracy, gentry, people in power, ruling class

THESAURUS

upper crust

FFVs, Vanity Fair, ancienne noblesse, aristocracy, baronage, baronetage, barons, beau monde, beautiful people, best people, blue blood, cafe society, carriage trade, chivalry, cream, cream of society, drawing room, elect, elite, establishment, fashionable society, flower, gentility, gentry, good society, haut monde, high life, high society, in-crowd, jet set, jeunesse doree, knightage, lords of creation, monde, nobility, noblesse, noblesse de robe, old nobility, overlapping, peerage, people of fashion, polite society, power elite, power structure, quality, right people, royalty, ruling circles, ruling class, salon, smart set, social register, societe, society, the Four Hundred, the best, the best people, the brass, the classes, top people, upper class, upper classes, upper ten, upper ten thousand, uppercut, world of fashion

For further exploring for "upper crust" in Webster Dictionary Online