Thoughtless | Definition of thoughtless by Merriam-Webster

Full 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

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1592

Synonyms: discourteous, disrespectful, ill-bred, ill-mannered, impertinent, inconsiderate, rude, impolite, uncalled-for, uncivil, ungracious, unhandsome, unmannered, unmannerly

Antonyms: civil, considerate, courteous, genteel, gracious, mannerly, polite, thoughtful, well-bred

1

: not considerate of others <thoughtless behavior>

2

: not careful and alert

3

: done without thinking <thoughtless actions>

— thought·less·ly adverb

— thought·less·ness noun

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