IPA: /ˈmɛloʊnəs/
KK: /ˈmɛloʊnəs/
The quality of being soft, relaxed, or gentle in character or tone.
The mellowness of the music created a calming atmosphere in the room.
Mellowness → It is formed from "mellow" (from Old English *melwe*, meaning soft or ripe) and "-ness" (meaning the state or quality of). The word "mellowness" refers to the state of being soft, ripe, or relaxed.
Think of the word 'mellow' which means soft or ripe, and remember that 'mellowness' describes the quality of being soft or relaxed.