• تَزْعُمُونَ
• زَعَمَ
• زَعَمْتَ
• زَعَمْتُم
• زَعَمْتُمْ
• زَعْمهِمْ
• زَعِيم
• يَزْعُمُونَ

Appears 16 times in the Quran.

1. 4:60 أَلَمْ تَرَ إِلَى ٱلَّذِينَ يَزْعُمُونَ أَنَّهُمْ ءَامَنُوا۟ بِمَآ أُنزِلَ إِلَيْكَ وَمَآ أُنزِلَ مِن قَبْلِكَ يُرِيدُونَ أَن يَتَحَاكَمُوٓا۟ إِلَى ٱلطَّٰغُوتِ وَقَدْ أُمِرُوٓا۟ أَن يَكْفُرُوا۟ بِهِۦ وَيُرِيدُ ٱلشَّيْطَٰنُ أَن يُضِلَّهُمْ ضَلَٰلًۢا بَعِيدًا

   Have you not seen those who assert that they believe in what has been revealed to you and what was revealed before you? They desire to summon one another to the judgment of the Shaitan, though they were commanded to deny him, and the Shaitan desires to lead them astray into a remote error.
   

2. 6:22 وَيَوْمَ نَحْشُرُهُمْ جَمِيعًا ثُمَّ نَقُولُ لِلَّذِينَ أَشْرَكُوٓا۟ أَيْنَ شُرَكَآؤُكُمُ ٱلَّذِينَ كُنتُمْ تَزْعُمُونَ

   And on the day when We shall gather them all together, then shall We say to those who associated others (with Allah): Where are your associates whom you asserted?
   

3. 6:94 وَلَقَدْ جِئْتُمُونَا فُرَٰدَىٰ كَمَا خَلَقْنَٰكُمْ أَوَّلَ مَرَّةٍ وَتَرَكْتُم مَّا خَوَّلْنَٰكُمْ وَرَآءَ ظُهُورِكُمْ وَمَا نَرَىٰ مَعَكُمْ شُفَعَآءَكُمُ ٱلَّذِينَ زَعَمْتُمْ أَنَّهُمْ فِيكُمْ شُرَكَٰٓؤُا۟ لَقَد تَّقَطَّعَ بَيْنَكُمْ وَضَلَّ عَنكُم مَّا كُنتُمْ تَزْعُمُونَ

   And certainly you have come to Us alone as We created you at first, and you have left behind your backs the things which We gave you, and We do not see with you your intercessors about whom you asserted that they were (Allah's) associates in respect to you; certainly the ties between you are now cut off and what you asserted is gone from you.
   

4. 6:136 وَجَعَلُوا۟ لِلَّهِ مِمَّا ذَرَأَ مِنَ ٱلْحَرْثِ وَٱلْأَنْعَٰمِ نَصِيبًا فَقَالُوا۟ هَٰذَا لِلَّهِ بِزَعْمِهِمْ وَهَٰذَا لِشُرَكَآئِنَا فَمَا كَانَ لِشُرَكَآئِهِمْ فَلَا يَصِلُ إِلَى ٱللَّهِ وَمَا كَانَ لِلَّهِ فَهُوَ يَصِلُ إِلَىٰ شُرَكَآئِهِمْ سَآءَ مَا يَحْكُمُونَ

   And they set apart a portion for Allah out of what He has created of tilth and cattle, and say: This is for Allah-- so they assert-- and this for our associates; then what is for their associates, it reaches not to Allah, and whatever is (set apart) for Allah, it reaches to their associates; evil is that which they judge.
   

5. 6:138 وَقَالُوا۟ هَٰذِهِۦٓ أَنْعَٰمٌ وَحَرْثٌ حِجْرٌ لَّا يَطْعَمُهَآ إِلَّا مَن نَّشَآءُ بِزَعْمِهِمْ وَأَنْعَٰمٌ حُرِّمَتْ ظُهُورُهَا وَأَنْعَٰمٌ لَّا يَذْكُرُونَ ٱسْمَ ٱللَّهِ عَلَيْهَا ٱفْتِرَآءً عَلَيْهِ سَيَجْزِيهِم بِمَا كَانُوا۟ يَفْتَرُونَ

   And they say: These are cattle and tilth prohibited, none shall eat them except such as We please-- so they assert-- and cattle whose backs are forbidden, and cattle on which they would not mention Allah's name-- forging a lie against Him; He shall requite them for what they forged.
   

6. 12:72 قَالُوا۟ نَفْقِدُ صُوَاعَ ٱلْمَلِكِ وَلِمَن جَآءَ بِهِۦ حِمْلُ بَعِيرٍ وَأَنَا۠ بِهِۦ زَعِيمٌ

   They said: We miss the king's drinking cup, and he who shall bring it shall have a camel-load and I am responsible for it.
   

7. 17:56 قُلِ ٱدْعُوا۟ ٱلَّذِينَ زَعَمْتُم مِّن دُونِهِۦ فَلَا يَمْلِكُونَ كَشْفَ ٱلضُّرِّ عَنكُمْ وَلَا تَحْوِيلًا

   Say: Call on those whom you assert besides Him, so they shall not control the removal of distress from you nor (its) transference.
   

8. 17:92 أَوْ تُسْقِطَ ٱلسَّمَآءَ كَمَا زَعَمْتَ عَلَيْنَا كِسَفًا أَوْ تَأْتِىَ بِٱللَّهِ وَٱلْمَلَٰٓئِكَةِ قَبِيلًا

   Or you should cause the heaven to come down upon us in pieces as you think, or bring Allah and the angels face to face (with us).
   

9. 18:48 وَعُرِضُوا۟ عَلَىٰ رَبِّكَ صَفًّا لَّقَدْ جِئْتُمُونَا كَمَا خَلَقْنَٰكُمْ أَوَّلَ مَرَّةٍۭ بَلْ زَعَمْتُمْ أَلَّن نَّجْعَلَ لَكُم مَّوْعِدًا

   And they shall be brought before your Lord, standing in ranks: Now certainly you have come to Us as We created you at first. Nay, you thought that We had not appointed to you a time of the fulfillment of the promise.
   

10. 18:52 وَيَوْمَ يَقُولُ نَادُوا۟ شُرَكَآءِىَ ٱلَّذِينَ زَعَمْتُمْ فَدَعَوْهُمْ فَلَمْ يَسْتَجِيبُوا۟ لَهُمْ وَجَعَلْنَا بَيْنَهُم مَّوْبِقًا

    And on the day when He shall say: Call on those whom you considered to be My associates. So they shall call on them, but they shall not answer them, and We will cause a separation between them.
    

11. 28:62 وَيَوْمَ يُنَادِيهِمْ فَيَقُولُ أَيْنَ شُرَكَآءِىَ ٱلَّذِينَ كُنتُمْ تَزْعُمُونَ

    And on the day when He will call them and say: Where are those whom you deemed to be My associates?
    

12. 28:74 وَيَوْمَ يُنَادِيهِمْ فَيَقُولُ أَيْنَ شُرَكَآءِىَ ٱلَّذِينَ كُنتُمْ تَزْعُمُونَ

    And on the day when He shall call them and say: Where are those whom you deemed to be My associates?
    

13. 34:22 قُلِ ٱدْعُوا۟ ٱلَّذِينَ زَعَمْتُم مِّن دُونِ ٱللَّهِ لَا يَمْلِكُونَ مِثْقَالَ ذَرَّةٍ فِى ٱلسَّمَٰوَٰتِ وَلَا فِى ٱلْأَرْضِ وَمَا لَهُمْ فِيهِمَا مِن شِرْكٍ وَمَا لَهُۥ مِنْهُم مِّن ظَهِيرٍ

    Say: Call upon those whom you assert besides Allah; they do not control the weight of an atom in the heavens or in the earth nor have they any partnership in either, nor has He among them any one to back (Him) up.
    

14. 62:6 قُلْ يَٰٓأَيُّهَا ٱلَّذِينَ هَادُوٓا۟ إِن زَعَمْتُمْ أَنَّكُمْ أَوْلِيَآءُ لِلَّهِ مِن دُونِ ٱلنَّاسِ فَتَمَنَّوُا۟ ٱلْمَوْتَ إِن كُنتُمْ صَٰدِقِينَ

    Say: O you who are Jews, if you think that you are the favorites of Allah to the exclusion of other people, then invoke death If you are truthful.
    

15. 64:7 زَعَمَ ٱلَّذِينَ كَفَرُوٓا۟ أَن لَّن يُبْعَثُوا۟ قُلْ بَلَىٰ وَرَبِّى لَتُبْعَثُنَّ ثُمَّ لَتُنَبَّؤُنَّ بِمَا عَمِلْتُمْ وَذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌ

    Those who disbelieve think that they shall never be raised. Say: Aye! by my Lord! you shall most certainly be raised, then you shall most certainly be informed of what you did; and that is easy to Allah.
    

16. 68:40 سَلْهُمْ أَيُّهُم بِذَٰلِكَ زَعِيمٌ

    Ask them which of them will vouch for that,