(ن) غَفَلَ يَغْفُلُ غَفْلَةً وَغُفُوْلًاghafala yaghfulu ghaflatan wa-ghufūlan: to be heedless, to be unaware. (This verb is not used in the Quran.)
غَفْلَةٌghaflah (verbal noun (maṣdar) in the sense of a noun (ism dhāt)): unawareness, heedlessness. ﴿لَقَدْ كُنْتَ فِيْ غَفْلَةٍ مِّنْ هٰذَا﴾ (Qāf 50:22)
غَافِلٌghāfil pl. غٰفِلُوْنَghāfilūna (active participle (ism fāʿil)): heedless, unaware. ﴿وَمَا اللّٰهُ بِغَافِلٍ عَمَّا تَعْمَلُوْنَ﴾ (Al-Baqarah 2:74); ﴿اُولٰٓئِكَ هُمُ الْغٰفِلُوْنَ﴾ (Al-Aʿrāf 7:179)
Form IV (ifʿāl) اَغْفَلَ يُغْفِلُ اِغْفَالًاaghfala yughfilu ighfālan: to make someone heedless. ﴿وَلَا تُطِعْ مَنْ اَغْفَلْنَا قَلْبَهُۥ عَنْ ذِكْرِنَا﴾ (Al-Kahf 18:28)
Form VI (tafāʿul) تَغَافَلَtaghāfala: to feign heedlessness, to be heedless deliberately (not used in the Quran).