enough is enough
US /ɪˈnʌf ɪz ɪˈnʌf/
UK /ɪˈnʌf ɪz ɪˈnʌf/

1.
もうたくさんだ, うんざりだ
used to say that you want something to stop because you cannot tolerate it any longer
:
•
I've listened to your complaints all day, but now enough is enough!
一日中あなたの不満を聞いてきたけど、もううんざりだ!
•
The constant noise from the construction site was unbearable. Finally, I decided enough is enough and called the city.
建設現場からの絶え間ない騒音は耐え難かった。ついに、もううんざりだと決めて市に電話した。