- Moderately cold; between warm and cold; lacking in warmth; producing or promoting coolness."Fanned with cool winds." [Milton.]
- Not ardent, warm, fond, or passionate; not hasty; deliberate; exercising self-control; self-possessed; dispassionate; indifferent; as, a cool lover; a cool debater."For a patriot, too cool." [Goldsmith.]
- Not retaining heat; light; as, a cool dress.
- Manifesting coldness or dislike; chilling; apathetic; as, a cool manner.
- Quietly impudent; negligent of propriety in matters of minor importance, either ignorantly or willfully; presuming and selfish; audacious; as, cool behavior."Its cool stare of familiarity was intolerable." [Hawthorne.]
- Applied facetiously, in a vague sense, to a sum of money, commonly as if to give emphasis to the largeness of the amount."He had lost a cool hundred." [Fielding.]"Leaving a cool thousand to Mr. Matthew Pocket." [Dickens.]synonyms: Calm; dispassionate; self-possessed; composed; repulsive; frigid; alienated; impudent.
Etymology: AS. cōl; akin to D. koel, G. kühl, OHG. chouli, Dan. kölig, Sw. kylig, also to AS. calan to be cold, Icel. kala. See Cold, and cf. Chill