The Quran root ك ذ ب k-dh-b

وَالَّذِينَ كَفَرُوا وَكَذَّبُوا بِآيَاتِنَا أُولَٰئِكَ أَصْحَابُ النَّارِ هُمْ فِيهَا خَالِدُونَ ٣٩

وَكَذَّبُوا wakadhabū · and deny

And those who disbelieve and deny Our signs - those will be companions of the Fire; they will abide therein eternally." (Surah Al-Baqarah, 2:39)

وَلَقَدْ آتَيْنَا مُوسَى الْكِتَابَ وَقَفَّيْنَا مِن بَعْدِهِ بِالرُّسُلِ وَآتَيْنَا عِيسَى ابْنَ مَرْيَمَ الْبَيِّنَاتِ وَأَيَّدْنَاهُ بِرُوحِ الْقُدُسِ أَفَكُلَّمَا جَاءَكُمْ رَسُولٌ بِمَا لَا تَهْوَىٰ أَنفُسُكُمُ اسْتَكْبَرْتُمْ فَفَرِيقًا كَذَّبْتُمْ وَفَرِيقًا تَقْتُلُونَ ٨٧

كَذَّبْتُمْ kadhabtum · you denied

And We did certainly give Moses the Scripture [i.e., the Torah] and followed up after him with messengers. And We gave Jesus, the son of Mary, clear proofs and supported him with the Pure Spirit [i.e., the angel Gabriel]. But is it [not] that every time a messenger came to you, [O Children of Israel], with what your souls did not desire, you were arrogant? And a party [of messengers] you denied and another party you killed. (Surah Al-Baqarah, 2:87)

وَمِنْ أَهْلِ الْكِتَابِ مَنْ إِن تَأْمَنْهُ بِقِنطَارٍ يُؤَدِّهِ إِلَيْكَ وَمِنْهُم مَّنْ إِن تَأْمَنْهُ بِدِينَارٍ لَّا يُؤَدِّهِ إِلَيْكَ إِلَّا مَا دُمْتَ عَلَيْهِ قَائِمًا ذَٰلِكَ بِأَنَّهُمْ قَالُوا لَيْسَ عَلَيْنَا فِي الْأُمِّيِّينَ سَبِيلٌ وَيَقُولُونَ عَلَى اللَّهِ الْكَذِبَ وَهُمْ يَعْلَمُونَ ٧٥

الْكَذِبَ l-kadhiba · the lie

And among the People of the Scripture is he who, if you entrust him with a great amount [of wealth], he will return it to you. And among them is he who, if you entrust him with a [single] coin, he will not return it to you unless you are constantly standing over him [demanding it]. That is because they say, "There is no blame upon us concerning the unlearned." And they speak untruth about Allāh while they know [it]. (Surah Ali 'Imran, 3:75)

فَمَنْ حَاجَّكَ فِيهِ مِن بَعْدِ مَا جَاءَكَ مِنَ الْعِلْمِ فَقُلْ تَعَالَوْا نَدْعُ أَبْنَاءَنَا وَأَبْنَاءَكُمْ وَنِسَاءَنَا وَنِسَاءَكُمْ وَأَنفُسَنَا وَأَنفُسَكُمْ ثُمَّ نَبْتَهِلْ فَنَجْعَل لَّعْنَتَ اللَّهِ عَلَى الْكَاذِبِينَ ٦١

الْكَاذِبِينَ l-kādhibīna · the liars

Then whoever argues with you about it after [this] knowledge has come to you - say, "Come, let us call our sons and your sons, our women and your women, ourselves and yourselves, then supplicate earnestly [together] and invoke the curse of Allāh upon the liars [among us]." (Surah Ali 'Imran, 3:61)

قَدْ خَلَتْ مِن قَبْلِكُمْ سُنَنٌ فَسِيرُوا فِي الْأَرْضِ فَانظُرُوا كَيْفَ كَانَ عَاقِبَةُ الْمُكَذِّبِينَ ١٣٧

الْمُكَذِّبِينَ l-mukadhibīna · (of) the deniers

Similar situations [as yours] have passed on before you, so proceed throughout the earth and observe how was the end of those who denied. (Surah Ali 'Imran, 3:137)

فِي قُلُوبِهِم مَّرَضٌ فَزَادَهُمُ اللَّهُ مَرَضًا وَلَهُمْ عَذَابٌ أَلِيمٌ بِمَا كَانُوا يَكْذِبُونَ ١٠

يَكْذِبُونَ yakdhibūna · [they] lie

In their hearts is disease, so Allāh has increased their disease; and for them is a painful punishment because they [habitually] used to lie. (Surah Al-Baqarah, 2:10)