Un·con·cerned a. Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent; as, to be unconcerned at what has happened; to be unconcerned about the future. -- Un*con*cern*ed*ly adv. -- Un*con*cern*ed*ness, n.
Happy mortals, unconcerned for more. --Dryden.
adj 1: 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" [ant: concerned]
2: easy in mind; not worried; "the prisoner seems entirely
unconcerned as to the outcome of the examination"
3: not occupied or engaged with; "readers unconcerned with