Webster's 1828 Dictionary
SWEETNESS
n.The quality of being sweet, in any of its senses; as gratefulness to the taste; or to the smell, fragrance; agreeableness to the ear, melody; as sweetness of the voice; sweetness of elocution. 1. Agreeableness of manners; softness; mildness; obliging civility; as sweetness of behavior.
2. Softness; mildness; amiableness; as sweetness of temper.
Webster's 1913 Dictionary
SWEETNESS
Sweet "ness, n. Etym: [AS. swetness.]
Defn: The quality or state of being sweet (in any sense of the adjective ); gratefulness to the taste or to the smell; agreeableness.
New American Oxford Dictionary
sweetness
sweet ness |ˈswētnis ˈswitnɪs | ▶noun the quality of being sweet. • used as an affectionate form of address, though often ironically: I've just got to go, sweetness. PHRASES sweetness and light social or political harmony: the relationship was by no means all sweetness and light. • a reasonable and peaceable person: when he's around she's all sweetness and light. [taken from Swift and used with aesthetic or moral reference, first by Arnold in Culture and Anarchy (1869 ).]
Oxford Dictionary
sweetness
sweet |ness |ˈswiːtnɪs | ▶noun [ mass noun ] the quality of being sweet. • used as an affectionate form of address, though often ironically: I've just got to go, sweetness. PHRASES sweetness and light social or political harmony: the relationship was by no means all sweetness and light. • good-natured benevolence: when he's around she's all sweetness and light. [taken from Swift and used with aesthetic or moral reference, first by Arnold in Culture and Anarchy (1869 ).]
Sanseido Wisdom Dictionary
sweetness
sweet ness /swíːtnəs /名詞 U 1 甘いこと ; 芳香 ; (音 声の )美しさ .2 かわいらしさ, 優しさ ; 快いこと .be (all ) sw è etness and l í ght 1 〈人が 〉優しさに満ちている, 親切である .2 〈物事が 〉やっていて楽しい, 簡単である .