/ Dictionary / Index N non-U: Meaning and Definition of Find definitions for: non-U Pronunciation: (non-y'), [key] — adj. not characteristic of or appropriate to the upper class, esp. of Great Britain: certain words and phrases that are considered absolutely non-U. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: non-u (Thesaurus) non troppo nonunion Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language