Mellow  —adj. 1 (of sound, colour, light) soft and rich, free from harshness. 2 (of character) gentle; mature. 3 genial, jovial. 4 euphem. Partly intoxicated. 5 (of fruit) soft, sweet, and juicy. 6 (of wine) well-matured, smooth. 7 (of earth) rich, loamy. —v. Make or become mellow.  mellowly adv. Mellowness n. [origin unknown]