← BackshareGuesssiziness/ˈsaɪzinəs/nounThe quality or state of being sizey; bulkiness or largeness.He admired the siziness of the ancient redwood trees.The siziness of the new sofa made it hard to fit through the door.The siziness of the portion surprised even the hungriest diners.SynonymsbulklargenessAntonymssmallness