nonconcern          
noun (also non-concern) uk/ˌnɒn.kənˈsɜːn/ us/ˌnɑːn.kənˈsɝːn/
 [ U ]不关心 
a lack of concern
  They're the victims of many years of nonconcern for human life.
 I wish I shared your nonconcern about this. 但愿我也像你这样漠然处之。 
  [ C ]无关紧要的事情 
something that is not of interest or concern to someone
  His state of alarm seemed such a non-concern to the interpreter. 对于翻译来说,他的惊慌状态似乎无关紧要。 
 - More examples
- They drew attention to the government's non-concern about the level of inflation.