nonchaloir

He joined himself to the following of what, in the old mythology of love, was prettily called nonchaloir; and in an odd mixture of feelings, a fling of self-respect, a preference for selfish liberty, and a great dash of that fear with which honest people regard serious interests, kept himself back from the straightforward course of life among certain selected activities.

Virginibus Puerisque and other papers 2005

_nonchaloir_ -- pushing his way through the group of astonished financiers in the doorway and marching up to Van Diest and the American with a very fine air of "you be damned" about the carriage of his head.

Men of Affairs Roland Pertwee

Not many French writers would express themselves as he does in the following: ” “Et il tressaille de jumeler le nonchaloir de sa jeunesse au renouveau de la belle ingenue.”

Frederic Mistral Downer, Charles A 1901