The Quran root ن ك ر n-k-r

وَلْتَكُن مِّنكُمْ أُمَّةٌ يَدْعُونَ إِلَى الْخَيْرِ وَيَأْمُرُونَ بِالْمَعْرُوفِ وَيَنْهَوْنَ عَنِ الْمُنكَرِ وَأُولَٰئِكَ هُمُ الْمُفْلِحُونَ ١٠٤

الْمُنكَرِ l-munkari · the wrong

And let there be [arising] from you a nation inviting to [all that is] good, enjoining what is right and forbidding what is wrong, and those will be the successful. (Surah Ali 'Imran, 3:104)

كُنتُمْ خَيْرَ أُمَّةٍ أُخْرِجَتْ لِلنَّاسِ تَأْمُرُونَ بِالْمَعْرُوفِ وَتَنْهَوْنَ عَنِ الْمُنكَرِ وَتُؤْمِنُونَ بِاللَّهِ وَلَوْ آمَنَ أَهْلُ الْكِتَابِ لَكَانَ خَيْرًا لَّهُم مِّنْهُمُ الْمُؤْمِنُونَ وَأَكْثَرُهُمُ الْفَاسِقُونَ ١١٠

الْمُنكَرِ l-munkari · the wrong

You are the best nation produced [as an example] for mankind. You enjoin what is right and forbid what is wrong and believe in Allāh. If only the People of the Scripture had believed, it would have been better for them. Among them are believers, but most of them are defiantly disobedient. (Surah Ali 'Imran, 3:110)

وَأَصْحَابُ مَدْيَنَ وَكُذِّبَ مُوسَىٰ فَأَمْلَيْتُ لِلْكَافِرِينَ ثُمَّ أَخَذْتُهُمْ فَكَيْفَ كَانَ نَكِيرِ ٤٤

نَكِيرِ nakīri · My punishment

And the inhabitants of Madyan. And Moses was denied, so I prolonged enjoyment for the disbelievers; then I seized them, and how [terrible] was My reproach. (Surah Al-Hajj, 22:44)

وَجَاءَ إِخْوَةُ يُوسُفَ فَدَخَلُوا عَلَيْهِ فَعَرَفَهُمْ وَهُمْ لَهُ مُنكِرُونَ ٥٨

مُنكِرُونَ munkirūna · knew him not

And the brothers of Joseph came [seeking food], and they entered upon him; and he recognized them, but he was to them unknown. (Surah Yusuf, 12:58)

وَالَّذِينَ آتَيْنَاهُمُ الْكِتَابَ يَفْرَحُونَ بِمَا أُنزِلَ إِلَيْكَ وَمِنَ الْأَحْزَابِ مَن يُنكِرُ بَعْضَهُ قُلْ إِنَّمَا أُمِرْتُ أَنْ أَعْبُدَ اللَّهَ وَلَا أُشْرِكَ بِهِ إِلَيْهِ أَدْعُو وَإِلَيْهِ مَآبِ ٣٦

يُنكِرُ yunkiru · deny

And [the believers among] those to whom We have given the [previous] Scripture rejoice at what has been revealed to you, [O Muḥammad], but among the [opposing] factions are those who deny part of it [i.e., the Qur’ān]. Say, "I have only been commanded to worship Allāh and not associate [anything] with Him. To Him I invite, and to Him is my return." (Surah Ar-Ra'd, 13:36)

فَانطَلَقَا حَتَّىٰ إِذَا لَقِيَا غُلَامًا فَقَتَلَهُ قَالَ أَقَتَلْتَ نَفْسًا زَكِيَّةً بِغَيْرِ نَفْسٍ لَّقَدْ جِئْتَ شَيْئًا نُّكْرًا ٧٤

نُّكْرًا nuk'ran · evil

So they set out, until when they met a boy, he [i.e., al-Khiḍr] killed him. [Moses] said, "Have you killed a pure soul for other than [having killed] a soul? You have certainly done a deplorable thing." (Surah Al-Kahf, 18:74)