thoughtless
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thought·less

adjective \-ləs\

Definition of THOUGHTLESS

1
a : insufficiently alert : careless
b : reckless, rash <thoughtless actions>
2
: devoid of thought : insensate
3
: lacking concern for others : inconsiderate <rude and thoughtless behavior> <a thoughtless remark>
thought·less·ly adverb
thought·less·ness noun

Examples of THOUGHTLESS

  1. a selfish and thoughtless person
  2. <always making thoughtless comments that hurt other people's feelings>

First Known Use of THOUGHTLESS

1592

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