carefree
/ˈkɛrˌfriː/; /ˈkɑːrfriː/Definitions
1. adjective
feeling or showing no worry or concern; lighthearted and cheerful
“As a child, she was known to have a carefree spirit, always eager to play and explore.”
2. noun
a person who is carefree, especially in a way that is considered attractive or enviable
“Her carefree lifestyle was a source of inspiration to those around her.”