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English definition of “sudden”

sudden

adjective uk   /ˈsʌd.ən/ us  
B2 happening or done quickly and without warning: Drop the gun, put your hands in the air, and don't make any sudden movements. He had a sudden heart attack while he was on holiday. First they announce their engagement and then they tell me Angie's pregnant - it's all a bit sudden really.
suddenness
noun [U] uk   /-nəs/ us  
It was the suddenness of his illness that came as such a shock.
(Definition of sudden from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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