ripe, mature, relaxed, easygoing, melt, laid-back, soft, high, intoxicated, inebriated, more...

harsh, rough, coarse, gravelly, grating, raspy

calm, relaxed, easygoing, laid-back, peaceful, serene, tranquil, unhurried, placid, more...

little, more, real, lustre, freshening, same, strident, soft, old, rich, powerful

mellow; mellowness,   to soften,   relaxed, in a way,   less aggressive,   soft and sweet,   easy to listen to,   soft and sad,   soft happy,   soft voiced,   eyes soften