riot act riot • riot control · · · Info · Definitions · Characters · · riot act · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (noun) a vigorous reprimand. Synonyms: riot act. Example: "I read him the riot act." · · Noun Definition 1 (noun) a former English law requiring mobs to disperse after a magistrate reads the law to them. Synonyms: Riot Act. · · Noun Definition 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074