Main Entry: thought·less

Pronunciation: \-ləs\

Function: adjective

Date: 1592

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