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English definition of “knock-on effect”

knock-on effect

noun [C usually singular]   /ˈnɒk.ɒn.ɪˌfekt/ US  /ˈnɑːk.ɑːn-/ mainly UK
When an event or situation has a knock-on effect, it causes other events or situations, but not directly: If one or two trains run late, it has a knock-on effect on the entire rail service.Outcomes and consequences
(Definition of knock-on effect noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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