A ruckus is a noisy argument or a confused, loud mess of a situation — people shouting, a fuss breaking out, a room going sideways. It is informal.

A ruckus is所謂ruckus，就是 a noisy argument一場吵鬧的爭執 or a confused, loud mess of a situation或是一團混亂吵鬧的場面 people shouting, a fuss breaking out, a room going sideways大家在大吼、突然鬧起來、整個場面失控 It is它是 informal口語用法

You raise a ruckus, cause a ruckus, or there is a ruckus in the street. American English uses it a lot; British speakers understand it, but they also have their own cousins like row and ructions.

You你可以說 raise a ruckus引起騷動 cause a ruckus造成騷動 or there is a ruckus in the street或是街上有一陣騷動 American English uses it a lot美式英文很常用這個字 British speakers understand it英式英文的人聽得懂 but they also have their own cousins like row and ructions但他們也有自己常用的類似字，像row和ructions

It is not, by itself, a street fight or a riot, though a fight can start as a ruckus. It is more “what a noise and what a bother”.

It is not, by itself它本身並不是指 a street fight or a riot街頭鬥毆或暴動 though a fight can start as a ruckus不過一場打鬥確實可能是從ruckus開始的 It is more它比較接近 "what a noise and what a bother"「怎麼這麼吵、真是麻煩」的感覺

You would not put it in a formal letter. Teachers and parents say it when they mean stop making such a noise about this. One ruckus, two ruckuses — the singular is the form you will hear.

You would not put it in a formal letter你不會把這個字用在正式書信裡 Teachers and parents say it老師和爸媽會這樣說 when they mean stop making such a noise about this意思是要你別再為這件事吵吵鬧鬧 One ruckus, two ruckuses單數one ruckus，複數two ruckuses the singular is the form you will hear但你比較常聽到的是單數形式