Meaning

verb soften, make mellow

verb become more relaxed, easygoing, or genial

verb make or grow (more) mellow

originThe adjective is derived from Late Middle English melowe, melwe (“ripe, mellow; juicy; sweet”) [and other forms]; further etymology uncertain, possibly: * from an attributive use of melow, melowe, melewe, mele (“meal from ground grain or legumes; flour; kernel of barley or lentils”) [and other forms], from Old English melo, melu (“meal (edible part of a grain or pulse); flour”), from…

Etymology from Wiktionary, CC BY-SA 3.0