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Use "grayest" in a sentence
"The country is the "grayest" in the world, and its population is shrinking."
"Professional caregivers — almost all of them women — are one of the fastest-growing segments of the American work force, and also one of the grayest."
"But about those tourists you want to entice and attract to Virginia – I don't think too many of them want to remember the grayest part of history of all times called SLAVERY!!"