/ Dictionary / Index U unbuckle: Meaning and Definition of Find definitions for: un•buck•le Pronunciation: (un-buk'ul), [key] — v., -led, -ling. —v.i. to unfasten the buckle or buckles of. —v.i. to undo a buckle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unbuckle (Thesaurus) unbroken unbudgeable 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