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1. Calm and unruffled self-assurance
   "he performed with all the coolness of a veteran";
   - imperturbability, imperturbableness
    
2. The property of being moderately cold
   "the coolness of early morning";
   - chilliness, nip
    
3. Fearless self-possession in the face of danger
   - nervelessness
    
4. A lack of affection or enthusiasm
   "a distressing coolness of tone and manner";
   - coldness, frigidity, frigidness, iciness, chilliness
    
5. The characteristic of being fashionable and up to date
   - hipness, trendiness

Type of: calmness, cold, coldness, emotionlessness, fearlessness, frigidity, frigidness, low temperature, unemotionality

Encyclopedia: Coolness