[ thawt-lis ]
/ ˈθɔt lɪs /
Save This Word!
See synonyms for: thoughtless / thoughtlessly / thoughtlessness on Thesaurus.com


lacking in consideration for others; inconsiderate; tactless: a thoughtless remark.
characterized by or showing lack of thought: a shallow, thoughtless book.
not thinking enough; careless or heedless: thoughtless of his health.
devoid of or lacking capacity for thought.



Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of thoughtless

First recorded in 1585–95; thought1 + -less

OTHER WORDS FROM thoughtless

thought·less·ly, adverbthought·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for thoughtless

British Dictionary definitions for thoughtless

/ (ˈθɔːtlɪs) /


inconsideratea thoughtless remark
having or showing lack of thoughta thoughtless essay
unable to think; not having the power of thought

Derived forms of thoughtless

thoughtlessly, adverbthoughtlessness, 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