unconcernEtymologyFrom un- + concern, around 1660–1670.unconcern means Lack of interest or care; indifference or apathy. Lexicurio rates it Rare gem — a strength score of 78 out of 100.nounLack of interest or care; indifference or apathy.“Elizabeth took up some needlework, and was sufficiently amused in attending to what passed between Darcy and his companion. The perpetual commendations of the lady, either on his handwriting, or on the evenness of his lines, or on the length of his letter, with the perfect unconcern with which her praises were received, formed a curious dialogue, and was exactly in union with her opinion of each.”Freedom from worry or apprehensiveness; insouciance or nonchalance.“[Albert, about Bear asleep:] A soft smile of lovin' unconcern on his friendly face as he dozes on.”