/ Dictionary / Index U unbutton: Meaning and Definition of Find definitions for: un•but•ton Pronunciation: (un-but'n), [key] — v.t. to free (buttons) from buttonholes; unfasten or undo. to unfasten by or as if by unbuttoning: to unbutton a jacket. to disclose (one's feelings, thoughts, etc.) after deliberate or prolonged silence. —v.i. to unfasten a button or one's buttons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unbutton (Thesaurus) unburden unbuttoned 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