unthinking

Something that's unthinking is done without carefully considering how it might affect other people. An unthinking comment about your best friend's haircut might really hurt her feelings.

If you do something in an unthinking way, it's automatic or impulsive. Your unthinking prejudice against a certain breed of dog, for example, might be undermined when you actually meet a sweet Doberman. And your unthinking run through your Dad's flower garden to catch a football may instantly fill you with regret: if you'd stopped and thought about it, you wouldn't have done it.

Definitions of unthinking
1

adj not exhibiting or characterized by careful thought

Synonyms:
unreflective, unthoughtful
thoughtless
showing lack of careful thought

adj without care or thought for others

Synonyms:
thoughtless, uncaring
inconsiderate
lacking regard for the rights or feelings of others

adj mentally sluggish

Synonyms:
lumpen, lumpish
stupid
lacking or marked by lack of intellectual acuity

adv in a thoughtless manner

Synonyms:
thoughtlessly, unthinkingly
Antonyms:
thoughtfully
in a thoughtful manner

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