Coarseness, n.
The quality or state of being coarse; roughness; melegance; vulgarity; grossness; as, coarseness of food, texture, manners, or language. "The coarseness of the sackcloth." Dr. H. More. Pardon the coarseness of the illustration. L'Estrange. A coarseness and vulgarity in all the proceedings. Burke.
Shades of meaning
Fernald lists coarseness only as an antonym, under refinement.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given