run riot Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “run riot” in the English Dictionary

"run riot" in British English

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run riot

C2 If ​peoplerun riot, they ​behave in a way that is not ​controlled, ​running in all ​directions or being ​noisy or ​violent: I ​dread them coming here because they ​lettheirkidsrun riot. If ​yourimaginationruns riot, you have a lot of ​strange, ​exciting, or ​surprisingthoughts: My ​imagination was ​running riot, ​thinking of all the ​ways that I could ​spend the ​money.
(Definition of run riot from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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