The Quran root ظ ن ن ẓ-n-n

الَّذِينَ يَظُنُّونَ أَنَّهُم مُّلَاقُو رَبِّهِمْ وَأَنَّهُمْ إِلَيْهِ رَاجِعُونَ ٤٦

يَظُنُّونَ yaẓunnūna · believe

Who are certain that they will meet their Lord and that they will return to Him. (Surah Al-Baqarah, 2:46)

وَمِنْهُمْ أُمِّيُّونَ لَا يَعْلَمُونَ الْكِتَابَ إِلَّا أَمَانِيَّ وَإِنْ هُمْ إِلَّا يَظُنُّونَ ٧٨

يَظُنُّونَ yaẓunnūna · guess

And among them are unlettered ones who do not know the Scripture except [indulgement in] wishful thinking, but they are only assuming. (Surah Al-Baqarah, 2:78)

ثُمَّ أَنزَلَ عَلَيْكُم مِّن بَعْدِ الْغَمِّ أَمَنَةً نُّعَاسًا يَغْشَىٰ طَائِفَةً مِّنكُمْ وَطَائِفَةٌ قَدْ أَهَمَّتْهُمْ أَنفُسُهُمْ يَظُنُّونَ بِاللَّهِ غَيْرَ الْحَقِّ ظَنَّ الْجَاهِلِيَّةِ يَقُولُونَ هَل لَّنَا مِنَ الْأَمْرِ مِن شَيْءٍ قُلْ إِنَّ الْأَمْرَ كُلَّهُ لِلَّهِ يُخْفُونَ فِي أَنفُسِهِم مَّا لَا يُبْدُونَ لَكَ يَقُولُونَ لَوْ كَانَ لَنَا مِنَ الْأَمْرِ شَيْءٌ مَّا قُتِلْنَا هَاهُنَا قُل لَّوْ كُنتُمْ فِي بُيُوتِكُمْ لَبَرَزَ الَّذِينَ كُتِبَ عَلَيْهِمُ الْقَتْلُ إِلَىٰ مَضَاجِعِهِمْ وَلِيَبْتَلِيَ اللَّهُ مَا فِي صُدُورِكُمْ وَلِيُمَحِّصَ مَا فِي قُلُوبِكُمْ وَاللَّهُ عَلِيمٌ بِذَاتِ الصُّدُورِ ١٥٤

ظَنَّ ẓanna · (the) thought

Then after distress, He sent down upon you security [in the form of] drowsiness, overcoming a faction of you, while another faction worried about themselves, thinking of Allāh other than the truth - the thought of ignorance, saying, "Is there anything for us [to have done] in this matter?" Say, "Indeed, the matter belongs completely to Allāh." They conceal within themselves what they will not reveal to you. They say, "If there was anything we could have done in the matter, we [i.e., some of us] would not have been killed right here." Say, "Even if you had been inside your houses, those decreed to be killed would have come out to their death beds." [It was] so that Allāh might test what is in your breasts and purify what is in your hearts. And Allāh is Knowing of that within the breasts. (Surah Ali 'Imran, 3:154)

وَيُعَذِّبَ الْمُنَافِقِينَ وَالْمُنَافِقَاتِ وَالْمُشْرِكِينَ وَالْمُشْرِكَاتِ الظَّانِّينَ بِاللَّهِ ظَنَّ السَّوْءِ عَلَيْهِمْ دَائِرَةُ السَّوْءِ وَغَضِبَ اللَّهُ عَلَيْهِمْ وَلَعَنَهُمْ وَأَعَدَّ لَهُمْ جَهَنَّمَ وَسَاءَتْ مَصِيرًا ٦

الظَّانِّينَ l-ẓānīna · who assume

And [that] He may punish the hypocrite men and hypocrite women, and the polytheist men and polytheist women - those who assume about Allāh an assumption of evil nature. Upon them is a misfortune of evil nature; and Allāh has become angry with them and has cursed them and prepared for them Hell, and evil it is as a destination. (Surah Al-Fath, 48:6)