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Definitions

unthinking

[uhn-thing-king] / ʌnˈθɪŋ kɪŋ /
ADJECTIVE
careless
Synonyms
WEAK
blundering brutish feckless foolish heedless impulsive inadvertent inconsiderate indelicate insensitive instinctive mechanical napping negligent oblivious outrageous rash rude selfish senseless tactless thoughtless uncaring unconscious undiplomatic unheeding unintended unmeant unmindful unpremeditated unreasoning untactful unwise vacant witless
Antonyms
WEAK
careful cautious thoughtful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And that in turn prevents you from aimless or unthinking financial behavior.

From MarketWatch • Dec. 24, 2025

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 • Dec. 14, 2025

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

From BBC • Nov. 30, 2024

It brought in unthinking endorsements from famous and powerful folks, like Vice President Joe Biden, through the sheer force of awe alone.

From Slate • May 30, 2024

My feeling remains, no less than before, that this represents a piece of unthinking snobbery on the part of the Society.

From "The Remains of the Day" by Kazuo Ishiguro