insouciance, n.All

Insouciance (n.) about ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the opinion of others is the token not only of self-sufficiency but of utter recklessness.