careless
US /ˈker.ləs/
UK /ˈker.ləs/

1.
sbadato, negligente, imprudente
not giving enough attention and thought to what you are doing, with the result that you make mistakes, damage things, or cause harm to someone
:
•
It was careless of him to leave the door unlocked.
È stato sbadato da parte sua lasciare la porta aperta.
•
He made a careless mistake on the exam.
Ha fatto un errore sbadato all'esame.
2.
noncurante, indifferente, spensierato
not concerned or worried about something
:
•
She was careless of the consequences of her actions.
Era noncurante delle conseguenze delle sue azioni.
•
He seemed completely careless about his future.
Sembrava completamente noncurante del suo futuro.