/ Dictionary / Index R radical left: Meaning and Definition of Find definitions for: rad'ical left' Pronunciation: [key] the faction representing extreme left-wing political views, often Marxist or Maoist in ideology. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radicalize radically Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language