free spirit
US /ˌfriː ˈspɪr.ɪt/
UK /ˌfriː ˈspɪr.ɪt/

1.
espíritu libre
a person with a highly individual or independent character
:
•
She's always been a free spirit, traveling the world and living life on her own terms.
Siempre ha sido un espíritu libre, viajando por el mundo y viviendo la vida a su manera.
•
His artistic nature and unconventional lifestyle marked him as a true free spirit.
Su naturaleza artística y estilo de vida poco convencional lo marcaron como un verdadero espíritu libre.