/ Dictionary / Index U Unp: Meaning and Definition of Find definitions for: Unp Pronunciation: [key] unnilpentium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unorganized ferment unpack Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language