ض ل لḍ-l-l
(ض) ضَلَّ يَضِلُّ ضَلَالًاḍalla yaḍillu ḍalālan (original form: ضَلَلَ يَضْلِلُḍalala yaḍlilu): to deviate from the path, deliberately or by mistake, a little or much. ﴿فَقَدْ ضَلَّ ضَلٰلًا مُّبِيْنًا﴾ (Al-Aḥzāb 33:36)
ضَآلٌّḍāll pl. ضَآلُّوْنَḍāllūna (active participle, ism fāʿil): one who has strayed from the path. ﴿غَيْرِ الْمَغْضُوْبِ عَلَيْهِمْ وَلَا الضَّآلِّيْنَ﴾ (Al-Fātiḥah 1:7); ﴿وَوَجَدَكَ ضَآلًّا فَهَدٰى﴾ (Aḍ-Ḍuḥā 93:7)
Form IV (ifʿāl) اَضَلَّ يُضِلُّ اِضْلَالًاaḍalla yuḍillu iḍlālan: to turn someone from the path, to lead astray. ﴿يُضِلُّ مَنْ يَّشَآءُ وَيَهْدِيْ مَنْ يَّشَآءُ﴾ (An-Naḥl 16:93)