careless
🇺🇸
/ˈkerləs/
🇬🇧
/ˈkeələs/
not paying enough attention, so you make mistakes
It was careless of me to leave the door unlocked.
caused by not paying attention
He made a careless mistake on the test.
not worried about something
He was careless about his health.
not showing interest or effort
She gave a careless answer without thinking.