To be at the end of one's patience; unable to tolerate any longer.
再也忍受不下去了。
清·无名氏《官场维新记》第十四回果然那些学生忍无可忍，闹出全班散学的事来了。”
After repeated provocations, he finally reached the point of renwukeren and spoke out.
Learn the next connected idiom: 忍无可忍 (rěn wú kě rěn) → 忍气吞声 (rěn qì tūn shēng)
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