lacking in interest or care or feeling
- "blithely unconcerned about his friend's plight"
- "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"
easy in mind; not worried
- "the prisoner seems entirely unconcerned as to the outcome of the examination"
not occupied or engaged with
- "readers unconcerned with style"