all hell breaks loose

idiom

Definition of all hell breaks loose

informal
used to describe what happens when violent, destructive, and confused activity suddenly beginsI heard people shouting at each other, and suddenly all hell broke loose.

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“All hell breaks loose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all%20hell%20breaks%20loose. Accessed 4 Dec. 2020.

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