The state or condition of being unconcerned.(noun)
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Use "unconcernedness" in a sentence
"You would have thought so, said Sir Hargrave, had you observed with what a sleight, and with what unconcernedness, he pushed down my drawn sword with his hand (though he would grant me nothing) and took me under the arm, and led me in to you, as though he had taken me prisoner."
"Why, playing gently upon my harpsichord; and humming to it, to shew her unconcernedness."
"If a man invites young men, citizens, or acquaintance, they should (as Timon says) be accustomed to be content with any place, without ceremony or concernment; and this good nature and unconcernedness would be an excellent means to preserve and increase friendship."