كَظِيم
Appears 3 times in the Quran.
(Root: كظم)
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12:84 وَتَوَلَّىٰ عَنْهُمْ وَقَالَ يَٰٓأَسَفَىٰ عَلَىٰ يُوسُفَ وَٱبْيَضَّتْ عَيْنَاهُ مِنَ ٱلْحُزْنِ فَهُوَ كَظِيمٌ
And he turned away from them, and said: O my sorrow for Yusuf! and his eyes became white on account of the grief, and he was a repressor (of grief).
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And when a daughter is announced to one of them his face becomes black and he is full of wrath.
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43:17 وَإِذَا بُشِّرَ أَحَدُهُم بِمَا ضَرَبَ لِلرَّحْمَٰنِ مَثَلًا ظَلَّ وَجْهُهُۥ مُسْوَدًّا وَهُوَ كَظِيمٌ
And when one of them is given news of that of which he sets up as a likeness for the Beneficent Allah, his face becomes black and he is full of rage.