• تَعْتَذِرُوا۟
• عُذْر
• مَعَاذِيرهُۥ
• مَعْذِرَة
• مَعْذِرَةهُمْ
• مُعَذِّرُون
• يَعْتَذِرُونَ

Appears 11 times in the Quran.

1. 7:164 وَإِذْ قَالَتْ أُمَّةٌ مِّنْهُمْ لِمَ تَعِظُونَ قَوْمًا ٱللَّهُ مُهْلِكُهُمْ أَوْ مُعَذِّبُهُمْ عَذَابًا شَدِيدًا قَالُوا۟ مَعْذِرَةً إِلَىٰ رَبِّكُمْ وَلَعَلَّهُمْ يَتَّقُونَ

   And when a party of them said: Why do you admonish a with a severe chastisement? They said: To be free from blame before your Lord, and that haply they may guard (against evil).
   

2. 9:66 لَا تَعْتَذِرُوا۟ قَدْ كَفَرْتُم بَعْدَ إِيمَٰنِكُمْ إِن نَّعْفُ عَن طَآئِفَةٍ مِّنكُمْ نُعَذِّبْ طَآئِفَةًۢ بِأَنَّهُمْ كَانُوا۟ مُجْرِمِينَ

   Do not make excuses; you have denied indeed after you had believed; if We pardon a party of you, We will chastise (another) party because they are guilty.
   

3. 9:90 وَجَآءَ ٱلْمُعَذِّرُونَ مِنَ ٱلْأَعْرَابِ لِيُؤْذَنَ لَهُمْ وَقَعَدَ ٱلَّذِينَ كَذَبُوا۟ ٱللَّهَ وَرَسُولَهُۥ سَيُصِيبُ ٱلَّذِينَ كَفَرُوا۟ مِنْهُمْ عَذَابٌ أَلِيمٌ

   And the defaulters from among the dwellers of the desert came that permission may be given to them and they sat (at home) who lied to Allah and His Messenger; a painful chastisement shall afflict those of them who disbelieved.
   

4. 9:94 يَعْتَذِرُونَ إِلَيْكُمْ إِذَا رَجَعْتُمْ إِلَيْهِمْ قُل لَّا تَعْتَذِرُوا۟ لَن نُّؤْمِنَ لَكُمْ قَدْ نَبَّأَنَا ٱللَّهُ مِنْ أَخْبَارِكُمْ وَسَيَرَى ٱللَّهُ عَمَلَكُمْ وَرَسُولُهُۥ ثُمَّ تُرَدُّونَ إِلَىٰ عَٰلِمِ ٱلْغَيْبِ وَٱلشَّهَٰدَةِ فَيُنَبِّئُكُم بِمَا كُنتُمْ تَعْمَلُونَ

   They will excuse themselves to you when you go back to them. Say: Urge no excuse, by no means will we believe you; indeed Allah has informed us of matters relating to you; and now Allah and His Messenger will see your doings, then you shall be brought back to the Knower of the unseen and the seen, then He will inform you of what you did.
   

5. 18:76 قَالَ إِن سَأَلْتُكَ عَن شَىْءٍۭ بَعْدَهَا فَلَا تُصَٰحِبْنِى قَدْ بَلَغْتَ مِن لَّدُنِّى عُذْرًا

   He said: If I ask you about anything after this, keep me not in your company; indeed you shall have (then) found an excuse in my case.
   

6. 30:57 فَيَوْمَئِذٍ لَّا يَنفَعُ ٱلَّذِينَ ظَلَمُوا۟ مَعْذِرَتُهُمْ وَلَا هُمْ يُسْتَعْتَبُونَ

   But on that day their excuse shall not profit those who were unjust, nor shall they be regarded with goodwill.
   

7. 40:52 يَوْمَ لَا يَنفَعُ ٱلظَّٰلِمِينَ مَعْذِرَتُهُمْ وَلَهُمُ ٱللَّعْنَةُ وَلَهُمْ سُوٓءُ ٱلدَّارِ

   The day on which their excuse shall not benefit the unjust, and for them is curse and for them is the evil abode.
   

8. 66:7 يَٰٓأَيُّهَا ٱلَّذِينَ كَفَرُوا۟ لَا تَعْتَذِرُوا۟ ٱلْيَوْمَ إِنَّمَا تُجْزَوْنَ مَا كُنتُمْ تَعْمَلُونَ

   O you who disbelieve! do not urge excuses today; you shall be rewarded only according to what you did.
   

9. 75:15 وَلَوْ أَلْقَىٰ مَعَاذِيرَهُۥ

   Though he puts forth his excuses.
   

10. 77:6 عُذْرًا أَوْ نُذْرًا

    To clear or to warn.
    

11. 77:36 وَلَا يُؤْذَنُ لَهُمْ فَيَعْتَذِرُونَ

    And permission shall not be given to them so that they should offer excuses.