thoughtless

[ thawt-lis ]
See synonyms for thoughtless on Thesaurus.com
adjective
  1. lacking in consideration for others; inconsiderate; tactless: a thoughtless remark.

  2. characterized by or showing lack of thought: a shallow, thoughtless book.

  1. not thinking enough; careless or heedless: thoughtless of his health.

  2. devoid of or lacking capacity for thought.

Origin of thoughtless

1
First recorded in 1585–95; thought1 + -less

Other words for thoughtless

Other words from thoughtless

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

Words Nearby thoughtless

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use thoughtless in a sentence

  • It is either thoughtless repetition, or thoughtful Analysis that he must use.

    Assimilative Memory | Marcus Dwight Larrowe (AKA Prof. A. Loisette)
  • There was a very audible titter in the corner where three thoughtless young girls had squeezed themselves into one rocking-chair.

  • Irish anecdotes are exceedingly droll; but they only tend to show the thoughtless side of the Irish character.

    Friend Mac Donald | Max O'Rell
  • What a thoughtless wicked fool she had been; she had wrecked her own life and her cousin's by her wicked folly.

  • You get some ladies together and badger them into all sorts of thoughtless, unmeant admissions and call that testimony!

    In the Onyx Lobby | Carolyn Wells

British Dictionary definitions for thoughtless

thoughtless

/ (ˈθɔːtlɪs) /


adjective
  1. inconsiderate: a thoughtless remark

  2. having or showing lack of thought: a thoughtless essay

  1. unable to think; not having the power of thought

Derived forms of thoughtless

  • thoughtlessly, adverb
  • thoughtlessness, 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