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read someone the riot act

(British, Commonwealth, , archaic, historic) To give a formal warning for a riotous assembly to disperse, usually through reading a section of the Riot Act.

Documented since 1710sSilenthistorical106 viewsLast reviewed Jun 29, 2026+ Add a definition
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Born ~1714 · no dated citations yet
1714BornToday, 2026

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#1·Apr 27, 2026UK

(British, Commonwealth, , archaic, historic) To give a formal warning for a riotous assembly to disperse, usually through reading a section of the Riot Act.

She really read him the riot act about his smoking habit.
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#2·Apr 27, 2026UK

(idiomatic) To scold or berate somebody; to reprimand.

Origin: From read the Riot Act. See sense 2. The Riot Act is a historical British Act of Parliament enacted in 1714, which stated that once a statutory warning was read out to rioters and they failed to disperse within one hour, then authorities may use any force to disperse them with impunity. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
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