adj. mel·low·er,
mel·low·est 1. a. Soft, sweet, juicy, and full-flavored because of ripeness: a mellow fruit.
b. Suggesting softness or sweetness: "The mellow air brought in the feel of imminent autumn" (Thomas Hardy).
2. a. Flavorful and mild or smooth, as from being properly matured: a mellow wine.
b. Soft and pleasant; not harsh: a mellow voice; mellow light.
3. Gentle and understanding, especially from being mature or experienced: "She had seen him as a survival of a leisurely and tolerant age, a mellow man" (Elisabeth Ogilvie).
4. Relaxed and unhurried; easygoing: a mellow friend; a mellow conversation.
5. Slang Slightly and pleasantly intoxicated.
6. Moist, rich, soft, and loamy. Used of soil.