• أَبْكَىٰ
• بَكَتْ
• بُكِيّ
• تَبْكُونَ
• يَبْكُوا۟
• يَبْكُونَ

Appears 7 times in the Quran.

1. 9:82 فَلْيَضْحَكُوا۟ قَلِيلًا وَلْيَبْكُوا۟ كَثِيرًا جَزَآءًۢ بِمَا كَانُوا۟ يَكْسِبُونَ

   Therefore they shall laugh little and weep much as a recompense for what they earned.
   

2. 12:16 وَجَآءُوٓ أَبَاهُمْ عِشَآءً يَبْكُونَ

   And they came to their father at nightfall, weeping.
   

3. 17:109 وَيَخِرُّونَ لِلْأَذْقَانِ يَبْكُونَ وَيَزِيدُهُمْ خُشُوعًا

   And they fall down on their faces weeping, and it adds to their humility.
   

4. 19:58 أُو۟لَٰٓئِكَ ٱلَّذِينَ أَنْعَمَ ٱللَّهُ عَلَيْهِم مِّنَ ٱلنَّبِيِّۦنَ مِن ذُرِّيَّةِ ءَادَمَ وَمِمَّنْ حَمَلْنَا مَعَ نُوحٍ وَمِن ذُرِّيَّةِ إِبْرَٰهِيمَ وَإِسْرَٰٓءِيلَ وَمِمَّنْ هَدَيْنَا وَٱجْتَبَيْنَآ إِذَا تُتْلَىٰ عَلَيْهِمْ ءَايَٰتُ ٱلرَّحْمَٰنِ خَرُّوا۟ سُجَّدًا وَبُكِيًّا

   These are they on whom Allah bestowed favors, from among the prophets of the seed of Adam, and of those whom We carried with Nuh, and of the seed of Ibrahim and Israel, and of those whom We guided and chose; when the communications of the Beneficent Allah were recited to them, they fell down making obeisance and weeping.
   

5. 44:29 فَمَا بَكَتْ عَلَيْهِمُ ٱلسَّمَآءُ وَٱلْأَرْضُ وَمَا كَانُوا۟ مُنظَرِينَ

   So the heaven and the earth did not weep for them, nor were they respited.
   

6. 53:43 وَأَنَّهُۥ هُوَ أَضْحَكَ وَأَبْكَىٰ

   And that He it is Who makes (men) laugh and makes (them) weep;
   

7. 53:60 وَتَضْحَكُونَ وَلَا تَبْكُونَ

   And will you laugh and not weep?