unconcernedly
(ad.)漫不經心地,不在乎地,漠不關心地
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.
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unconcernedly
adv : in an unconcerned manner; "war was breaking out in Europe,
but she unconcernedly planned for a holiday"