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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ALL IN FAVO(U)R OF THIS BRITISH VS. AMERICAN ENGLISH QUIZ

There's an ocean of difference between the way people speak English in the US vs. the UK. Are your language skills up to the task of telling the difference? Let's find out!

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True or false? British English and American English are only different when it comes to slang words.

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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

Words nearby thoughtless

thought disorder, thought experiment, thoughtful, thoughtfulness, thought leader, thoughtless, thought-out, thought police, thought-provoking, thought reading, thought transference

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use thoughtless in a sentence

He might have made the point that knowledge changes, sometimes profoundly, and that one era’s objective truth may be revealed, by the light of another era, as a fallacy held together by thoughtless habit.
He Did Right by Animals. And Didn’t Take Bull from Anyone. - Issue 109: Excavation|Brandon Keim|December 15, 2021|Nautilus
A large portion of the dissatisfaction that employees feel is the result of actively toxic company policy, thoughtless management and executives clinging to the status quo.
Companies Are Embracing Empathy to Keep Employees Happy. It’s Not That Easy|Anne Helen Petersen|July 22, 2021|Time
When a thoughtless act of revenge awakens some dormant evil, Deena and her friends must dig deep into the dark history of their hometown in hopes of saving themselves.
Netflix's Fear Street Trilogy Is Generic Straight-to-VHS Horror With Nostalgic Flair|Judy Berman|July 7, 2021|Time
If it’s the tip of a thoughtless iceberg, then think bigger, please, about whether your marriage gives you what you need.
Carolyn Hax: Self-conscious teen lashes out, blames struggles on her ‘ugly’ dad|Carolyn Hax|May 30, 2021|Washington Post

Or, if he’s just thoughtless, you play along and let him think he’s getting one by all of you.
Carolyn Hax: Do you tell your father you know he’s hiding his cancer diagnosis?|Carolyn Hax|January 7, 2021|Washington Post
The rest of the episode follows Carrie spreading the gospel of her indignance over the thoughtless goodbye.
Confessions of a Rom-Com Writer: Liz Tuccillo Talks ‘Sex and the City,’ ‘Take Care,’ and More|Kevin Fallon|December 5, 2014|DAILY BEAST
He should, according to Mahony, prepare himself to be whacked over the head with such a thoughtless and offensive gift.
Dita Von Teese, My Breasts Are All Yours|Amanda Clayman|August 8, 2014|DAILY BEAST
They were often cruel and thoughtless to one another, regardless of their complete commitment to their family.
The Fiction Writer Shirley Jackson Stars in Her Own Novel|Hugh Ryan|June 18, 2014|DAILY BEAST
Luckily for them, the science runs directly against his thoughtless posturing about the importance of children.
Pope Francis Is Wrong About My Child-Free Life|Amanda Marcotte|June 6, 2014|DAILY BEAST
It was foolish and thoughtless of me to say this, but you know how little tact the average painter has.
Read ‘The King in Yellow,’ the ‘True Detective’ Reference That’s the Key to the Show|Robert W. Chambers|February 20, 2014|DAILY BEAST
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.
The Soldier of the Valley|Nelson Lloyd
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.
The Pit Town Coronet, Volume III (of 3)|Charles James Wills
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

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 nearby thoughtless

Words related to thoughtless

How to use thoughtless in a sentence

British Dictionary definitions for thoughtless

Derived forms of thoughtless