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Riot Act

Riot Act

9.9
A former English law that required crowds to leave when a local official read a formal announcement
  • noun
  • UK
translation icon : Ley de desórdenes
  • After several warnings, the authorities felt it was necessary to read the Riot Act to prevent a full-scale disturbance.

Examples

  • We must read the Riot Act and we must do so immediately.

  • Quite a contentious NE corner, with NITS getting picked, and folks all RILED UP and getting read the RIOT ACT after they HAD AT IT, perhaps over some ILL-MADE item.

    Blog text (26)
  • The RIOT ACT survives in the phrase "read someone the riot act," which was once literally true on the street.

    Blog text (26)
  • 19A: Old means of crowd control (RIOT ACT) -- Act of Parliament in force from 1715 to 1967.

    Blog text (26)
  • The police threatened to read the Riot Act if the protesters did not disperse peacefully.

  • When the crowd became unruly, the mayor decided to read the Riot Act to restore order.

Surface Forms

Riot Act singular
Riot Acts plural

Morphology

riot + act

The constituents 'riot' (violent public disorder) and 'act' (a law) transparently indicate a law concerning riots, so a B1 learner who knows both words would likely infer it is a legal statute about riots. However, the specific historical/procedural sense (a former law requiring dispersal after a magistrate's proclamation) and its idiomatic use (e.g. 'read someone the Riot Act' = sternly reprimand) are not predictable from the parts alone, making full understanding contingent on exposure.

Etymology

Riot Act was a law in old England that let an official read a loud order to a noisy crowd to make them leave. The word riot means a noisy crowd and act means a law, so 'to read someone the Riot Act' came to mean giving a very strong warning or scold.