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English definition of “luck”

luck

noun [U]     /lʌk/
A2 the force that causes things, especially good things, to happen to you by chance and not as a result of your own efforts or abilities : It was just luck that I asked for a job at the right time . Then I met this gorgeous woman and I couldn't believe my luck. She wears a charm that she thinks brings her good luck. He seems to have had a lot of bad luck in his life . So your interview's tomorrow ? Good luck! The best of luck in/with your exams !Chance and randomness B2 success : Have you had any luck with booking your flight ? He tried to get into teacher training college but with no luck.Success and achievementsHigher and lower points of achievementFailures Grammar:Luck and luckyWe use the noun luck and the adjective lucky to talk about good things happening by chance, and not because of our own efforts:
(Definition of luck noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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