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English definition of “cool”

cool

adjective     /kuːl/
COLD B1 slightly cold, but not too cold: a cool breeze/day cool waterCoolColdSnow and ice
GOOD informal A2 good, stylish, or fashionable: He looks really cool in those sunglasses.Modern and fashionableFashionModern and fashionableInformal words for goodGood, better and bestQuite good, or not very good
CALM calm and not emotional: She seemed cool and confident.Calm and relaxedNot showing or feeling emotionsControlling emotions
UNFRIENDLY unfriendlyNot being friendlyNot saying muchBlunt and direct in speech and behaviour
coolness noun [U]
(Definition of cool adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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