mildnessPronunciation: /ˈmʌɪldnɪs/Translate mildness | into Italian Definition of mildness noun [mass noun] 1lack of intensity:the tomatoes were sweet, compensating for the mildness of the cheese 2lack of severity:the mildness of her disease relative warmth of weather. 3a person’s lack of aggressiveness:the mildness of his manner and his desire to please everyonemildness in other Oxford dictionaries Definition of mildness in the US English dictionary