Position rack in lower third of oven; preheat to 350 degrees F.
Mix paprika, ground cumin, cinnamon, salt and pepper in a small bowl; stir in 2 tablespoons water to make a paste. Rub the mixture all over the turkey, particularly under the skin and onto the breast meat.
Place the turkey breast-side down on a roasting rack in a large roasting pan. Add 2 cups water to the pan. Roast for 1 1/2 hours.
Remove the turkey from the oven and turn it over—either use silicon oven gloves or cover the bird with foil and use cloth oven mitts to turn it over. Continue roasting, basting occasionally with pan juices, until an instant-read thermometer inserted into the thickest part of the thigh without touching bone registers 180 degrees F, about 1 1/2 to 2 hours more. If the bird is browning too deeply, tent with foil while it continues to bake. If the pan runs out of juices, add about 1/2 cup water, scrape up any browned bits, and use this liquid for basting. Let rest at room temperature for 30 minutes before carving.