thoughtless

[ thawt-lis ]

/ ˈθɔt lɪs /

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See synonyms for: thoughtless / thoughtlessly / thoughtlessness on Thesaurus.com

adjective

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.

OTHER WORDS FOR thoughtless

1 negligent, neglectful.

3 inattentive, remiss.

See synonyms for thoughtless on Thesaurus.com

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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. 2022

How to use thoughtless in a sentence

That will bring further evidence of a departure from the dull old days of the 20th century, when a thoughtless football world saw Polynesian players and went ahead and pigeonholed them as linemen only.
Clemson’s D.J. Uiagalelei continuing proud tradition of Polynesian quarterbacks|Chuck Culpepper|November 6, 2020|Washington Post
Unless said partner is ready to be whacked over their head with the box for their thoughtlessness, they have made a grave mistake.
Dita Von Teese, Keep Your Hands Off Our Boobs|Emma Mahony|August 6, 2014|DAILY BEAST
When dealing with this kind of thoughtlessness it should be pointed out that fathers are not free from blame.
Report of the Special Committee on Moral Delinquency in Children and Adolescents|Oswald Chettle Mazengarb et al.
From fool thoughtlessness I had not put on my overcoat, which was now far away in charge of the blue-bloused porter.
Jaffery|William J. Locke

I fell to fingering these with the same impulse of thoughtlessness that induces people to bite their finger-nails.
A Little Union Scout|Joel Chandler Harris
The old marquis, in his culpable thoughtlessness, had kindled this burning envy in the heart of his second son.
File No. 113|Emile Gaboriau
With the thoughtlessness of youth Foster had never troubled his mind much about the piratical city of Algiers.
The Middy and the Moors|R.M. Ballantyne

British Dictionary definitions for thoughtless

thoughtless

/ (ˈθɔːtlɪs) /

adjective

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

thoughtless

OTHER WORDS FOR thoughtless

Origin of thoughtless

OTHER WORDS FROM thoughtless

Words related to thoughtless

How to use thoughtless in a sentence

British Dictionary definitions for thoughtless

Derived forms of thoughtless