unconcerned (Adjective) — Lacking in interest, care or feeling. ex. "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" ex. "blithely unconcerned about his friend's plight"
unconcerned (Adjective) — Easy in mind; not worried. ex. "the prisoner seems entirely unconcerned as to the outcome of the examination"
unconcerned (Adjective) — Not occupied or engaged with. ex. "readers unconcerned with style"