/ Dictionary / Index U unknot: Meaning and Definition of Find definitions for: un•knot Pronunciation: (un-not'), [key] — -knot•ted, -knot•ting. to untie by or as if by undoing a knot: to unknot a tie. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unknot (Thesaurus) unknit unknowable Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language