/ Dictionary / Index U unconcern: Meaning and Definition of Find definitions for: un•con•cern Pronunciation: (un"kun-sûrn'), [key] — n. absence of feeling or concern; indifference. freedom from anxiety. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unconcern (Thesaurus) unconceivable unconcerned 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