fullness

(noun) completeness over a broad scope. Synonyms: comprehensiveness.

(noun) the property of a sensation that is rich and pleasing. Synonyms: mellowness, richness. Examples: "The music had a fullness that echoed through the hall." "The cheap wine had no body, no mellowness." "He was well aware of the richness of his own appearance."

(noun) the condition of being filled to capacity.

(noun) greatness of volume. Synonyms: voluminosity, voluminousness.