/ Dictionary / Index R reckless: Meaning and Definition of Find definitions for: reck•less Pronunciation: (rek'lis), [key] — adj. utterly unconcerned about the consequences of some action; without caution; careless (usually fol. by of&hasp;): to be reckless of danger. characterized by or proceeding from such carelessness: reckless extravagance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: reckless (Thesaurus) reck Recklinghausen Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language