/ Dictionary / Index U untie: Meaning and Definition of Find definitions for: un•tie Pronunciation: (un-tī'), [key] — v., -tied, -ty•ing. —v.t. to loose or unfasten (anything tied); let or set loose by undoing a knot. to undo the string or cords of. to undo, as a cord or a knot; unknot. to free from restraint. to resolve, as perplexities. —v.i. to become untied. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: untie (Thesaurus) untidy until Related Content Daily Word Quiz: charlatan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language