← BackshareGuessjettiness/ˈdʒɛtinəs/nounThe quality or state of being black and glossy like jet.The jettiness of the polished stone made it a favorite for jewelry.She admired the jettiness of the raven's feathers.The artist used charcoal to capture the jettiness of the night sky.SynonymsdarknessblacknessAntonymswhiteness