ADJ-GRADED 轻慢的;不在乎的;掉以轻心的 If you describe a person or their behaviour as cavalier, you are criticizing them because you think that they do not consider other people's feelings or take account of the seriousness of a situation. 轻慢的;不在乎的;掉以轻心的 [disapproval]
The Editor takes a cavalier attitude to the concept of fact checking.