[ rek-lis ]
See synonyms for reckless on
  1. utterly unconcerned about the consequences of some action; without caution; careless (usually followed by of): to be reckless of danger.

  2. characterized by or proceeding from such carelessness: reckless extravagance.

Origin of reckless

First recorded before 900; Middle English rekles, Old English reccelēas “careless” (cognate with German ruchlos ); see reck, -less

Other words for reckless

Opposites for reckless

Other words from reckless

  • reck·less·ly, adverb
  • reck·less·ness, noun

Words that may be confused with reckless Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use reckless in a sentence

British Dictionary definitions for reckless


/ (ˈrɛklɪs) /

  1. having or showing no regard for danger or consequences; heedless; rash: a reckless driver; a reckless attempt

Origin of reckless

Old English recceleās (see reck, -less); related to Middle Dutch roekeloos, Old High German ruahhalōs

Derived forms of reckless

  • recklessly, adverb
  • recklessness, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012