From Longman Dictionary of Contemporary Englishunconcernun‧con‧cern /ˌʌnkənˈsɜːn $ -ɜːrn/ noun [uncountable] DON'T CAREwhen you do not care about something that other people worry aboutunconcern about/for/over the government’s apparent unconcern about high inflation
Examples from the Corpus
unconcern• Opposite the flower market he stepped into the maniacal Le Loi traffic, attempting languor and unconcern.• We were shocked by their apparent unconcern for their own safety.• Mr Malik put his arm round Robert and continued to watch this display with apparent unconcern.• A cavalier unconcern about such consequences is too often the response of powerful mental health professionals who create categories of abnormality.• I pretended unconcern and slowly made my way towards some huts where previously I had been welcomed.• Furious now in his terror and at Rohmer's unconcern, Gilbert had struck out at him.• Silas moved away from her, walking to where Misty nibbled the new spring growth with the utmost unconcern.unconcern about/for/over• A cavalier unconcern about such consequences is too often the response of powerful mental health professionals who create categories of abnormality. 