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3 days ago · cool, composed, collected, unruffled, imperturbable, nonchalant mean free from agitation or excitement. cool may imply calmness, deliberateness, or dispassionateness.

cool adjective (CALM) C1 calm and not worried or frightened; not influenced by strong feeling of any kind:

1. A cool place, part, or time: the cool of early morning. 2. The state or quality of being cool. 3. Composure; poise: "Our release marked a victory. The nation had kept its cool" (Moorhead Kennedy).

A moderate or refreshing state of cold; moderate temperature of the air between hot and cold; coolness. In the cool of the morning.

cool, adj., adv., & int. meanings, etymology, pronunciation and more in the Oxford English Dictionary

May 24, 2026 · Definition Cool is commonly defined as “moderately cold” or as “showing composure and self-control” (or, in informal use, “fashionably attractive or impressive”). Because it can describe both …

Cool can be defined as an adjective to describe something or someone that is fashionable, stylish, or trendy. It conveys a sense of attractiveness or allure that is often associated with being calm, …

"cool summer dresses "; "cool drinks "; "a cool breeze "; "a cool autumn day "; "a cool room " [informal] Fashionable and attractive at the time; often skilled or socially adept

COOL definition: moderately cold; neither warm nor cold. See examples of cool used in a sentence.