unconcern

Meanings

1. 1
   noun

   a lack of interest, care, or involvement; indifference

   Her unconcern about the missing documents surprised the rest of the committee.

2. 2
   noun

   calm freedom from worry or anxiety

   He answered the threat with such unconcern that his companions stopped panicking.

Formed in the seventeenth century from un- ("lack of") + concern. Concern first denoted a relation or involvement and then care or anxiety; unconcern consequently developed both a negative sense, indifference, and a more favorable sense, freedom from worry.

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