Definition of "Mellow" :

verb: make or grow (more) mellow

"These apples need to mellow a bit more."

verb: become more relaxed, easygoing, or genial

"With age, he mellowed."

verb: soften, make mellow

"Age and experience mellowed him over the years."

adjective: slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana)

adjective: softened through age or experience

"Mellow wisdom."

adjective: having a full and pleasing flavor through proper aging

"A mellow port."

adjective: unhurried and relaxed

"A mellow conversation."

adverb: in a mellow manner