n. Want of concern; absence of anxiety; freedom from solicitude; indifference. [ 1913 Webster ]
A listless unconcern,
Cold, and averting from our neighbor's good. Thomson. [ 1913 Webster ]
a. Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent;
Happy mortals, unconcerned for more. Dryden. [ 1913 Webster ]
a. Not interesting or affecting; insignificant; not belonging to one. [ Obs. ] Addison. [ 1913 Webster ]
n. The state of being unconcerned, or of having no share or concern; unconcernedness. [ Obs. ] South. [ 1913 Webster ]