• أَضْحَكَ
• تَضْحَكُونَ
• ضَاحِك
• ضَاحِكَة
• ضَحِكَتْ
• يَضْحَكُوا۟
• يَضْحَكُونَ

Appears 10 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. 11:71 وَٱمْرَأَتُهُۥ قَآئِمَةٌ فَضَحِكَتْ فَبَشَّرْنَٰهَا بِإِسْحَٰقَ وَمِن وَرَآءِ إِسْحَٰقَ يَعْقُوبَ

   And his wife was standing (by), so she laughed, then We gave her the good news of Ishaq and after Ishaq of (a son's son) Yaqoub.
   

3. 23:110 فَٱتَّخَذْتُمُوهُمْ سِخْرِيًّا حَتَّىٰٓ أَنسَوْكُمْ ذِكْرِى وَكُنتُم مِّنْهُمْ تَضْحَكُونَ

   But you took them for a mockery until they made you forget My remembrance and you used to laugh at them.
   

4. 27:19 فَتَبَسَّمَ ضَاحِكًا مِّن قَوْلِهَا وَقَالَ رَبِّ أَوْزِعْنِىٓ أَنْ أَشْكُرَ نِعْمَتَكَ ٱلَّتِىٓ أَنْعَمْتَ عَلَىَّ وَعَلَىٰ وَٰلِدَىَّ وَأَنْ أَعْمَلَ صَٰلِحًا تَرْضَىٰهُ وَأَدْخِلْنِى بِرَحْمَتِكَ فِى عِبَادِكَ ٱلصَّٰلِحِينَ

   So he smiled, wondering at her word, and said: My Lord! grant me that I should be grateful for Thy favor which Thou hast bestowed on me and on my parents, and that I should do good such as Thou art pleased with, and make me enter, by Thy mercy, into Thy servants, the good ones.
   

5. 43:47 فَلَمَّا جَآءَهُم بِـَٔايَٰتِنَآ إِذَا هُم مِّنْهَا يَضْحَكُونَ

   But when he came to them with Our signs, lo! they laughed at them.
   

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?
   

8. 80:39 ضَاحِكَةٌ مُّسْتَبْشِرَةٌ

   Laughing, joyous.
   

9. 83:29 إِنَّ ٱلَّذِينَ أَجْرَمُوا۟ كَانُوا۟ مِنَ ٱلَّذِينَ ءَامَنُوا۟ يَضْحَكُونَ

   Surely they who are guilty used to laugh at those who believe.
   

10. 83:34 فَٱلْيَوْمَ ٱلَّذِينَ ءَامَنُوا۟ مِنَ ٱلْكُفَّارِ يَضْحَكُونَ

    So today those who believe shall laugh at the unbelievers;