/ Dictionary / Index U untune: Meaning and Definition of Find definitions for: un•tune Pronunciation: (un-tn', -tyn'), [key] — -tuned, -tun•ing. to render or cause to become out of tune: Changes in weather can untune a violin. to discompose; upset, as the mind or emotions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: untune (Thesaurus) untuck untutored Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language