unconcerned

Adjective

• not occupied or engaged with
  • readers unconcerned with style
    

• easy in mind; not worried
  • the prisoner seems entirely unconcerned as to the outcome of the examination
    

• lacking in interest or care or feeling
  • the average American...is unconcerned that his or her plight is the result of a complex of personal and economic and governmental actions...beyond the normal citizen's comprehension and control
    
  • blithely unconcerned about his friend's plight