read (someone) the riot act
US /riːd ðə ˈraɪət ækt/
UK /riːd ðə ˈraɪət ækt/

1.
memberi amaran keras, memarahi dengan teruk
to reprimand someone severely and warn them to improve their behavior
:
•
After he broke curfew again, his parents decided to read him the riot act.
Selepas dia melanggar perintah berkurung lagi, ibu bapanya memutuskan untuk memberinya amaran keras.
•
The manager had to read the team the riot act after their poor performance.
Pengurus terpaksa memberi amaran keras kepada pasukan selepas prestasi buruk mereka.