The word(s) "كَذَّابٌ" appears in 7 verse(s) in Quran.

(1) وَعَجِبُوا أَن جَاءَهُم مُّنذِرٌ مِّنْهُمْ ۖ وَقَالَ الْكَافِرُونَ هَـٰذَا سَاحِرٌ كَذَّابٌ

(سورة ص, Saad, Chapter #38, Verse #4)
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(2) إِلَىٰ فِرْعَوْنَ وَهَامَانَ وَقَارُونَ فَقَالُوا سَاحِرٌ كَذَّابٌ

(سورة غافر, Ghafir, Chapter #40, Verse #24)
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(3) وَقَالَ رَجُلٌ مُّؤْمِنٌ مِّنْ آلِ فِرْعَوْنَ يَكْتُمُ إِيمَانَهُ أَتَقْتُلُونَ رَجُلًا أَن يَقُولَ رَبِّيَ اللَّهُ وَقَدْ جَاءَكُم بِالْبَيِّنَاتِ مِن رَّبِّكُمْ ۖ وَإِن يَكُ كَاذِبًا فَعَلَيْهِ كَذِبُهُ ۖ وَإِن يَكُ صَادِقًا يُصِبْكُم بَعْضُ الَّذِي يَعِدُكُمْ ۖ إِنَّ اللَّهَ لَا يَهْدِي مَنْ هُوَ مُسْرِفٌ كَذَّابٌ

(سورة غافر, Ghafir, Chapter #40, Verse #28)
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(4) أَأُلْقِيَ الذِّكْرُ عَلَيْهِ مِن بَيْنِنَا بَلْ هُوَ كَذَّابٌ أَشِرٌ

(سورة القمر, Al-Qamar, Chapter #54, Verse #25)
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(5) سَيَعْلَمُونَ غَدًا مَّنِ الْكَذَّابُ الْأَشِرُ

(سورة القمر, Al-Qamar, Chapter #54, Verse #26)
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(6) وَكَذَّبُوا بِآيَاتِنَا كِذَّابًا

(سورة النبإ, An-Naba, Chapter #78, Verse #28)
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(7) لَّا يَسْمَعُونَ فِيهَا لَغْوًا وَلَا كِذَّابًا

(سورة النبإ, An-Naba, Chapter #78, Verse #35)
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