• لَغْو
• ٱلْغَوْا۟
• لَٰغِيَة

Appears 11 times in the Quran.

1. 2:225 لَّا يُؤَاخِذُكُمُ ٱللَّهُ بِٱللَّغْوِ فِىٓ أَيْمَٰنِكُمْ وَلَٰكِن يُؤَاخِذُكُم بِمَا كَسَبَتْ قُلُوبُكُمْ وَٱللَّهُ غَفُورٌ حَلِيمٌ

   Allah does not call you to account for what is vain in your oaths, but He will call you to account for what your hearts have earned, and Allah is Forgiving, Forbearing.
   

2. 5:89 لَا يُؤَاخِذُكُمُ ٱللَّهُ بِٱللَّغْوِ فِىٓ أَيْمَٰنِكُمْ وَلَٰكِن يُؤَاخِذُكُم بِمَا عَقَّدتُّمُ ٱلْأَيْمَٰنَ فَكَفَّٰرَتُهُۥٓ إِطْعَامُ عَشَرَةِ مَسَٰكِينَ مِنْ أَوْسَطِ مَا تُطْعِمُونَ أَهْلِيكُمْ أَوْ كِسْوَتُهُمْ أَوْ تَحْرِيرُ رَقَبَةٍ فَمَن لَّمْ يَجِدْ فَصِيَامُ ثَلَٰثَةِ أَيَّامٍ ذَٰلِكَ كَفَّٰرَةُ أَيْمَٰنِكُمْ إِذَا حَلَفْتُمْ وَٱحْفَظُوٓا۟ أَيْمَٰنَكُمْ كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمْ ءَايَٰتِهِۦ لَعَلَّكُمْ تَشْكُرُونَ

   Allah does not call you to account for what is vain in your oaths, but He calls you to account for the making of deliberate oaths; so its expiation is the feeding of ten poor men out of the middling (food) you feed your families with, or their clothing, or the freeing of a neck; but whosoever cannot find (means) then fasting for three days; this is the expiation of your oaths when you swear; and guard your oaths. Thus does Allah make clear to you His communications, that you may be Fateful.
   

3. 19:62 لَّا يَسْمَعُونَ فِيهَا لَغْوًا إِلَّا سَلَٰمًا وَلَهُمْ رِزْقُهُمْ فِيهَا بُكْرَةً وَعَشِيًّا

   They shall not hear therein any vain discourse, but only: Peace, and they shall have their sustenance therein morning and evening.
   

4. 23:3 وَٱلَّذِينَ هُمْ عَنِ ٱللَّغْوِ مُعْرِضُونَ

   And who keep aloof from what is vain,
   

5. 25:72 وَٱلَّذِينَ لَا يَشْهَدُونَ ٱلزُّورَ وَإِذَا مَرُّوا۟ بِٱللَّغْوِ مَرُّوا۟ كِرَامًا

   And they who do not bear witness to what is false, and when they pass by what is vain, they pass by nobly.
   

6. 28:55 وَإِذَا سَمِعُوا۟ ٱللَّغْوَ أَعْرَضُوا۟ عَنْهُ وَقَالُوا۟ لَنَآ أَعْمَٰلُنَا وَلَكُمْ أَعْمَٰلُكُمْ سَلَٰمٌ عَلَيْكُمْ لَا نَبْتَغِى ٱلْجَٰهِلِينَ

   And when they hear idle talk they turn aside from it and say: We shall have our deeds and you shall have your deeds; peace be on you, we do not desire the ignorant.
   

7. 41:26 وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لَا تَسْمَعُوا۟ لِهَٰذَا ٱلْقُرْءَانِ وَٱلْغَوْا۟ فِيهِ لَعَلَّكُمْ تَغْلِبُونَ

   And those who disbelieve say: Do not listen to this Quran and make noise therein, perhaps you may overcome.
   

8. 52:23 يَتَنَٰزَعُونَ فِيهَا كَأْسًا لَّا لَغْوٌ فِيهَا وَلَا تَأْثِيمٌ

   They shall pass therein from one to another a cup wherein there shall be nothing vain nor any sin.
   

9. 56:25 لَا يَسْمَعُونَ فِيهَا لَغْوًا وَلَا تَأْثِيمًا

   They shall not hear therein vain or sinful discourse,
   

10. 78:35 لَّا يَسْمَعُونَ فِيهَا لَغْوًا وَلَا كِذَّٰبًا

    They shall not hear therein any vain words nor lying.
    

11. 88:11 لَّا تَسْمَعُ فِيهَا لَٰغِيَةً

    Wherein you shall not hear vain talk.