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Even on death row, he retained his aura of blithe unconcern.

His attitude veered from playful unconcern to cool indifference, as he told macabre jokes about surviving riots and poked fun at clichés and stereotypes about Muslims.

Most of Ukraine’s ravaged cultural sites are like the shelled Reims Cathedral: perhaps not directly targeted, but destroyed with ruthless unconcern.

It takes time to figure all of this out, which may signal confidence in the audience on the part of Wills and Tarker, or brash unconcern.

She opened her eyes, and we all started as she said, sweetly and seemingly with the utmost unconcern:—