If someone mellows or if something mellows them, they become kinder or less extreme in their behaviour, especially as a result of growing older. When the children married and had children of their own, he mellowed a little Marriage had not mellowed him. Mellow is also an adjective. Is she more mellow and tolerant?
A mellow sound or flavour is pleasant, smooth, and rich. His voice was deep and mellow and his speech had a soothing and comforting quality. a delightfully mellow, soft and balanced wine
Not coarse, rough, or harsh; subdued; soft; rich; delicate; -- said of sound, color, flavor, style, etc
make or grow (more) mellow; "These apples need to mellow a bit more"; "The sun mellowed the fruit" become more relaxed, easygoing, or genial; "With age, he mellowed" soften, make mellow; "Age and experience mellowed him over the years" having or suggesting softness and richness in quality; "a mellow sound"; "the mellow air brought in the feel of imminent autumn"- Thomas Hardy; "a mellowing sun" having attained to kindliness or gentleness through age and experience; "mellow wisdom"; "the peace of mellow age" having a full and pleasing flavor through proper aging; "a mellow port"; "mellowed fruit
having attained to kindliness or gentleness through age and experience; "mellow wisdom"; "the peace of mellow age"
Full, well-balanced, satisfying coffee; implies low or medium acidity (See winy )
having or suggesting softness and richness in quality; "a mellow sound"; "the mellow air brought in the feel of imminent autumn"- Thomas Hardy; "a mellowing sun"