Order! Order!
Definition 1 of 1
Pro Tip 1/3Authority Call
Used by someone in charge, like a judge or speaker, when demanding quiet and attention. 
The Speaker of the House yelled, 'Order! Order!' to silence the noisy MPs.
Pro Tip 2/3Formal Setting
It's used in formal contexts such as courts or parliamentary debates, not casual conversation. 
During the debate, 'Order! Order!' was heard as things got heated.
Pro Tip 3/3Demanding Respect
Conveys the need for respect towards the rules and procedures of the setting. 
After the interruption, the chairperson proclaimed, 'Order! Order!', demanding respect.