The Collaborative International Dictionary
Unconcernedness
Unconcerned \Un`con*cerned"\, a. Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent; as, to be unconcerned at what has happened; to be unconcerned about the future. -- Un`con*cern"ed*ly, adv. -- Un`con*cern"ed*ness, n.
Happy mortals, unconcerned for more.
--Dryden.
Wiktionary
unconcernedness
n. The state or condition of being unconcerned.
Usage examples of "unconcernedness".
With the unconcernedness of a machine, she had lifted a hand and was slowly massaging her cheek and neck.
She had a show of unconcernedness, but her fingers twitched and drummed and she licked her lips with her scarlet tongue.
In a vague and unexpressed way, as they show again and again by their cheerfulness and unconcernedness, hosts of men in this war have laid hold on this law.