noun

1. A relaxed mood.

verb

1. To make mellow; to relax or soften.

   “The fervour of early feeling is tempered and mellowed by the ripeness of age.”

2. To become mellow.

adjective

1. Soft or tender by reason of ripeness; having a tender pulp.

   “a mellow apple”

2. Easily worked or penetrated; not hard or rigid.

   “a mellow soil”

3. Not coarse, rough, or harsh; subdued, soft, rich, delicate; said of sound, color, flavor, style, etc.

Synonyms: convivial, gay, genial, jovial, yielding, merry, casual, easy-breezy