View synonyms for thoughtless


[ thawt-lis ]


  1. lacking in consideration for others; inconsiderate; tactless:

    a thoughtless remark.

    Synonyms: neglectful, negligent

  2. characterized by or showing lack of thought: think: thought:

    a shallow, thoughtless book.

  3. not thinking enough; careless or heedless:

    thoughtless of his health.

    Synonyms: remiss, inattentive

  4. devoid of or lacking capacity for thought. think. thought.


/ ˈθɔːtlɪs /


  1. inconsiderate

    a thoughtless remark

  2. having or showing lack of thought

    a thoughtless essay

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

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Derived Forms

  • ˈthoughtlessness, noun
  • ˈthoughtlessly, adverb

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Other Words From

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

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Word History and Origins

Origin of thoughtless1

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

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Example Sentences

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.

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.

From 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.

From Time

If it’s the tip of a thoughtless iceberg, then think bigger, please, about whether your marriage gives you what you need.

Or, if he’s just thoughtless, you play along and let him think he’s getting one by all of you.

The rest of the episode follows Carrie spreading the gospel of her indignance over the thoughtless goodbye.

He should, according to Mahony, prepare himself to be whacked over the head with such a thoughtless and offensive gift.

They were often cruel and thoughtless to one another, regardless of their complete commitment to their family.

Luckily for them, the science runs directly against his thoughtless posturing about the importance of children.

It was foolish and thoughtless of me to say this, but you know how little tact the average painter has.

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

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.

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!





thought leaderthought-out