1. [ adjective ] having or suggesting softness and richness in quality
Synonyms: mellow

"a mellow sound" "the mellow air brought in the feel of imminent autumn"- Thomas Hardy "a mellowing sun"

Related terms: soft
2. [ noun ] (biology) the process of becoming mellow
Related terms: ripening mellow
3. [ noun ] (biology) acquiring desirable qualities by being left undisturbed for some time
Synonyms: aging ageing ripening
Related terms: organic_process
Similar spelling:   mellowingly