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English definition of “cool”

cool

adjective (CALM)    /kuːl/
C1 calm and not worried or frightened ; not influenced by strong feeling of any kind : He was very cool and calm about the mishap , and didn't shout or lose his temper . Stay / Keep cool (= do not become angry or excited ).Calm and relaxed be cool with sth informal to be happy to accept a situation or suggestion : Yeah , we could leave later - I'm cool with that.Accepting and agreeingAccepting and agreeing reluctantlyApproving and approval
(Definition of cool adjective (CALM) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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