1. free from anxiety, responsibility, or concern; lighthearted and without worries
The children had a carefree summer playing in the park.
As crianças tiveram um verão despreocupado brincando no parque.
2. showing a lack of proper attention or concern; negligent
His carefree attitude toward his studies led to poor grades.
Sua atitude despreocupada em relação aos estudos resultou em más notas.