• ٱطْمِسْ
• طُمِسَتْ
• طَمَسْنَا
• طَمَسْنَآ
• نَّطْمِسَ

Appears 5 times in the Quran.

1. 4:47 يَٰٓأَيُّهَا ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ ءَامِنُوا۟ بِمَا نَزَّلْنَا مُصَدِّقًا لِّمَا مَعَكُم مِّن قَبْلِ أَن نَّطْمِسَ وُجُوهًا فَنَرُدَّهَا عَلَىٰٓ أَدْبَارِهَآ أَوْ نَلْعَنَهُمْ كَمَا لَعَنَّآ أَصْحَٰبَ ٱلسَّبْتِ وَكَانَ أَمْرُ ٱللَّهِ مَفْعُولًا

   O you who have been given the Book! believe that which We have revealed, verifying what you have, before We alter faces then turn them on their backs, or curse them as We cursed the violaters of the Sabbath, and the command of Allah shall be executed.
   

2. 10:88 وَقَالَ مُوسَىٰ رَبَّنَآ إِنَّكَ ءَاتَيْتَ فِرْعَوْنَ وَمَلَأَهُۥ زِينَةً وَأَمْوَٰلًا فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا رَبَّنَا لِيُضِلُّوا۟ عَن سَبِيلِكَ رَبَّنَا ٱطْمِسْ عَلَىٰٓ أَمْوَٰلِهِمْ وَٱشْدُدْ عَلَىٰ قُلُوبِهِمْ فَلَا يُؤْمِنُوا۟ حَتَّىٰ يَرَوُا۟ ٱلْعَذَابَ ٱلْأَلِيمَ

   And Musa said: Our Lord! surely Thou hast given to Firon and his chiefs finery and riches in this world's life, to this end, our Lord, that they lead (people) astray from Thy way: Our Lord! destroy their riches and harden their hearts so that they believe not until they see the painful punishment.
   

3. 36:66 وَلَوْ نَشَآءُ لَطَمَسْنَا عَلَىٰٓ أَعْيُنِهِمْ فَٱسْتَبَقُوا۟ ٱلصِّرَٰطَ فَأَنَّىٰ يُبْصِرُونَ

   And if We please We would certainly put out their eyes, then they would run about groping for the way, but how should they see?
   

4. 54:37 وَلَقَدْ رَٰوَدُوهُ عَن ضَيْفِهِۦ فَطَمَسْنَآ أَعْيُنَهُمْ فَذُوقُوا۟ عَذَابِى وَنُذُرِ

   And certainly they endeavored to turn him from his guests, but We blinded their eyes; so taste My chastisement and My warning.
   

5. 77:8 فَإِذَا ٱلنُّجُومُ طُمِسَتْ

   So when the stars are made to lose their light,