/ Dictionary / Index U untuck: Meaning and Definition of Find definitions for: un•tuck Pronunciation: (un-tuk'), [key] — v.t. to release from or bring out of a tucked condition: She untucked her legs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. untruthful untune Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language