1. In a manner that shows a lack of worry, interest, or concern; indifferently
He unconcernedly walked past the accident without stopping to help.
Ele passou desinteressadamente pelo acidente sem parar para ajudar.
2. Without showing anxiety or care about something that might normally cause concern
She unconcernedly ignored the critical comments about her work.
Ela ignorou desinteressadamente os comentários críticos sobre seu trabalho.