Oxford Dictionary English knock-on adjective adjective BrE BrE//ˌnɒk ˈɒn// ; NAmE NAmE//ˌnɑːk ˈɑːn// , NAmE//ˌnɑːk ˈɔːn// (especially British English) Add to my wordlistjump to other resultscausing other events to happen one after another in a series The increase in the price of oil had a knock-on effect on the cost of many other goods. Oxford Collocations DictionaryKnock-on is used with these nouns: effect See full entryCheck pronunciation: knock-on oxfordlearnersdictionaries.com