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Use "cold-heartedness" in a sentence
"The normalization of cruelty and brash cold-heartedness is the brand of our time."
"But, the distinctive among conservatives and liberals isn't between compassion and cold-heartedness!"
"Eyebrows are raised as high as golden arches at the colossal cold-heartedness that McDonald's has shown in regards to the treatment of its employee, Nigel Haskett."