A "cavalier attitude" refers to a carefree or casual approach, where someone behaves without concern for important matters or without taking things seriously. Full definition
Twenty years ago in the early days of the civilian nuclear waste repository program, while we were struggling with a variety of issues as to how to assure the reproducibility of the analytical work, the kind of cavalier attitudes toward software QA / QC that is now demonstrated by many climate scientists was not all that uncommon among the many scientists employed by the repository project.. (climateaudit.org)
Grappling with cavalier attitudes towards power and privilege, this exhibition takes a speculative view of the functional / dysfunctional in social constructs. (chicagoartistscoalition.org)
Yes, the financial industry's seemingly cavalier attitude about other people's money is probably one of the reasons you're stressed in the first place. (health.com)