UNCONCERNED

[adjective] - not worried or not interested, esp. when you should be worried or interestedHe was strolling around with an unconcerned air.Are you as unconcerned about the situation as you appear?She seems unconcerned by the danger of going over budget.Unfortunately, they seem unconcerned with anything except their own welfare.They're unconcerned that their action may provoke a war in the region.