/ Dictionary / Index U upper class: Meaning and Definition of Find definitions for: up'per class' Pronunciation: [key] a class of people above the middle class, having the highest social rank or standing based on wealth, family connections, and the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Upper Chinook upperclassman Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language