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English definition of “suddenly”

suddenly

adverb uk   /ˈsʌd.ən.li/ us  
B1 quickly and unexpectedly: "Do you remember much about the accident?" "No, it all happened so suddenly." I was just dozing off to sleep when suddenly I heard a scream from outside. I suddenly realized what I'd said, but it was too late.Not expected or planned
(Definition of suddenly from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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