thoughtless
adjective /ˈθɔːtləs/
/ˈθɔːtləs/
(disapproving)- not caring about the possible effects of your words or actions on other people synonym inconsiderate
- a thoughtless remark
Extra Examples- It was thoughtless of him to take the car without checking first.
- It was thoughtless to spring it on you so suddenly.
- There could be a serious accident as a result of their thoughtless actions.