insouciance
UK /ɪnˈsuːsi.əns/ US /ɪnˈsuːsi.əns/
noun 2
Definitions
noun
1
Carelessness, heedlessness, indifference, or casual unconcern.
So Gelernter, with an insouciance he now regrets, also chose a Lovelace as a namesake—Linda, the lead actress in "Deep Throat."
2
Nonchalance.
She almost felt insulted by [the wild boar's] insouciance as it rooted in her grove.
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