read the riot act . read the riot act {v. phr.} To give someone a strong warning or scolding. Three boys were late to class and the teacher read the riot act to them. Categories: add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: R Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Post my comment