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English definition of “brilliant”

brilliant

adjective uk   /ˈbrɪl.i.ənt/ us  

brilliant adjective (VERY GOOD)

A2 UK informal very good: "Did you like the film?" "I thought it was brilliant." She's got a brilliant sense of humour. Oh, brilliant! My parcel's arrived.Extremely good

brilliant adjective (CLEVER)

B1 extremely clever or skilled: Her mother was a brilliant scientist. He gave a brilliant performance. The idea was quite brilliant. She seemed to have a brilliant career ahead of her (= was likely to be extremely successful).IntelligencePerceptive

brilliant adjective (SHINING)

B1 full of light, shining, or bright in colour: The sky was a brilliant, cloudless blue. I was dazzled by a brilliant light.The qualities of light
brilliantly
adverb uk   /-li/ us  
B2 He seems to do everything brilliantly - piano playing, skiing, sailing.IntelligencePerceptive
(Definition of brilliant from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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