ب ط لb-ṭ-l
(ن) بَطَلَ يَبْطُلُ بُطْلًا وَبُطُوْلًاbaṭala yabṭulu buṭlan wa-buṭūlan: to be false, to be futile, to come to nothing. ﴿فَوَقَعَ الْحَقُّ وَبَطَلَ مَا كَانُوْا يَعْمَلُوْنَ﴾ (Al-Aʿrāf 7:118)
بَاطِلٌbāṭil (active participle, ism fāʿil): falsehood, that which is wrong. ﴿وَقُلْ جَآءَ الْحَقُّ وَزَهَقَ الْبَاطِلُ﴾ (Al-Isrāʾ 17:81)
Form IV (ifʿāl) اَبْطَلَ يُبْطِلُ اِبْطَالًاabṭala yubṭilu ibṭālan: to declare the truth false, to nullify the truth, to render void. ﴿لَا تُبْطِلُوْا صَدَقٰتِكُمْ بِالْمَنِّ وَالْاَذٰى﴾ (Al-Baqarah 2:264)
مُبْطِلٌmubṭil (active participle, ism fāʿil): follower of falsehood. ﴿اِذًا لَّارْتَابَ الْمُبْطِلُوْنَ﴾ (Al-ʿAnkabūt 29:48)