mellowness in WordNet English dictionary

1. the property of a sensation that is rich and pleasing
   "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"
   fullness  mellowness  richness 
   
2. a soft shade of a color
   "a mellowness of light and shade not attainable in marble"
   mellowness 
   
3. geniality, as through the effects of alcohol or marijuana
   mellowness 
   
4. a taste (especially of fruit) that is ripe and of full flavor
   mellowness 
   
5. kindheartedness through maturity or old age
   mellowness