Definition of

Cool

(noun, attribute) the quality of being at a refreshingly low temperature
(noun, attribute) great coolness and composure under strain
(verb, change) make cool or cooler
(verb, change) loose heat
(verb, change) lose intensity
(adj, all) neither warm nor very cold; giving relief from heat
a cool room
cool summer dresses
cool drinks
a cool breeze
(adj, all) marked by calm self-control (especially in trying circumstances); unemotional
keep cool
stayed coolheaded in the crisis
the most nerveless winner in the history of the tournament
(adj, all) (color) inducing the impression of coolness; used especially of greens and blues and violets
(adj, all) psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike
a cool reception
cool to the idea of higher taxes
(adj, all) (used of a number or sum) without exaggeration or qualification
(adj, all) fashionable and attractive at the time; often skilled or socially adept
that's cool
Mary's dress is really cool
it's not cool to arrive at a party too early

via WordNet, Princeton University

Synonyms of Cool

Derivations: cool, coolant, cooler, cooling, coolness

Hyponyms: ice, quench, refrigerate

Hypernyms: alter, calm, calmness, change, change state, cold, coldness, composure, equanimity, frigidity, frigidness, low temperature, modify, turn

O.E. col, from P.Gmc. *koluz, from PIE base *gel- "cold, to freeze." The v. form kele (from O.E. colian) was used by Shakespeare, but has been assimilated with the adj. into the modern word. Applied since 1728 to large sums of money to give emphasis to amount. Meaning "calmly audacious" is from 1825. Slang use for "fashionable" is 1933, origin… more

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