/ Dictionary / Index U unpen: Meaning and Definition of Find definitions for: un•pen Pronunciation: (un-pen'), [key] — -penned, -pen•ning. to release from confinement. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unpeg unpeople Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language