unthinking

American  

[uhn-thing-king] / ʌnˈθɪŋ kɪŋ /

adjective

1. thoughtless; heedless; inconsiderate.

   an unthinking, tactless person.

2. indicating lack of thought or reflection.

   a dull, unthinking expression on his face.

3. not endowed with the faculty of thought.

   unthinking matter.

4. not exercising thought; not given to reflection.

   This book will not profit an unthinking person.

5. not thinking; think; unmindful.

   chores done in an unthinking manner.

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unthinking British  

/ ʌnˈθɪŋkɪŋ /

adjective

1. lacking thoughtfulness; inconsiderate

2. heedless; inadvertent

   it was done in an unthinking moment

3. not thinking or able to think

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Other Word Forms

• unthinkingly adverb
• unthinkingness noun

Etymology

Origin of unthinking

First recorded in 1670–80; un- ¹ + thinking

Example Sentences

For all its promise, AI risks instilling in students an unthinking yet false understanding of themselves and society, destroying the morals and habits that make human flourishing possible.

From The Wall Street Journal

Collecting nickels and dimes from the trades of unthinking investors felt beneath the dignity of a big-time Wall Street bond trader.

From Literature

The piece talked down to Roan and diminished her requests as childish and unthinking — ironic for something as petulant as the column reads.

From Salon

Reba’s dig at Stracke’s son was the sort of casual, unthinking barb that plenty of Southern mothers have perfected, tossed into a group conversation as nonchalantly as a request for sweet tea.

From Salon

Mr Harvey admitted sending them a letter in April 2017 which he now acknowledged was “crass, inappropriate… unthinking and insensitive”.

From BBC