SMOOTH'NESS, noun 1. Evenness of suface; freedom from roughness or asperity; as the smoothness of a floor or wall; smoothness of the skin; smoothness of the water. 2. Softness or mildness to the palate; as the smoothness of wine. 3. Softness and sweetness of numbers; easy flow of words. Virgil, though smooth where smoothness is required, is far from affecting it. 4. Mildness or gentleness of speech; blandness of address.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI