Webster's 1828 Dictionary
COOLNESS
n. 1. A moderate degree of cold; a temperature between cold and heat; as the coolness of the summers evening.
2. A moderate degree, or a want of passion; want of ardor, or zeal; indifference; want of affection; as, they parted with coolness.
Webster's 1913 Dictionary
COOLNESS
COOLNESS Cool "ness, n.
1. The state of being cool; a moderate degree of cold; a moderate degree, or a want, of passion; want of ardor, zeal, or affection; calmness.
2. Calm impudence; self-possession. [Colloq. ]
Duden Dictionary
Coolness
Cool ness Substantiv, feminin salopp , die |Coolness |die Coolness; Genitiv: der Coolness englisch coolness = Kühlheit das Coolsein
Sanseido Wisdom Dictionary
coolness
c ó ol ness 名詞 U 1 冷静 (さ ), 沈着 .2 冷淡 (さ ), よそよそしさ ; 無礼 .3 冷たさ, 涼しさ .
The Wordsmith Dictionary