Breadcrumb Home > Dictionary > Index R rancor: Meaning and Definition of Find definitions for: ran•cor Pronunciation: (rang'kur), [key] — n. bitter, rankling resentment or ill will; hatred; malice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rancor (Thesaurus) rancid rancorous ✖ Related Content Daily Word Quiz: evanescent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language