mellow (Verb) — Soften, make mellow. ex. "Age and experience mellowed him over the years"
mellow (Verb) — Become more relaxed, easygoing, or genial. ex. "With age, he mellowed"
mellow (Verb) — Make or grow (more) mellow. ex. "These apples need to mellow a bit more" ex. "The sun mellowed the fruit"
mellow (Adjective) — Unhurried and relaxed. ex. "a mellow conversation"
mellow (Adjective) — Having a full and pleasing flavour through proper aging. ex. "a mellow port"
mellow (Adjective) — Having attained to kindliness or gentleness through age and experience. ex. "the peace of mellow age" ex. "mellow wisdom"
mellow (Adjective) — Slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana).
mellow (Adverb) — In a mellow manner.