adj
thoughtless
THAWT-luhs
adj
1
Done without proper thought or care.
"It was a thoughtless comment that hurt her feelings."
2
Inconsiderate of other people.
"Leaving the door open in winter was a thoughtless thing to do."
How to Use Thoughtless
Learner’s notesIn plain EnglishCareless or inconsiderate — done without stopping to think about the consequences or other people.
Easily confused with
Common pairings
thoughtless remark
thoughtless behavior
Word Forms
more thoughtless comparative, most thoughtless superlative
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It was a _____ comment that hurt her feelings.
Etymology
From thought plus -less, meaning literally "lacking thought."