Smooth'ness, n.

n. The quality or condition of being smooth; evenness of surface; freedom from roughness or asperity; as, the smoothness of a floor; smoothness of the skin; smoothness of the water; softness or mildness to the palate; as, the smoothness of wine; softness and sweetness of manners; easy flow of words; mildness or gentleness of speech; blandness of address.