(ض) ظَلَمَ يَظْلِمُ ظُلْمًاẓalama yaẓlimu ẓulman: to fail to put something in its proper place, whether by falling short or by going too far; used in the senses of exceeding the right and of falling short of it.
ظُلْمٌẓulm (noun, ism dhāt): injustice, wrong. ﴿اِنَّ اللّٰهَ لَا يَظْلِمُ مِثْقَالَ ذَرَّةٍ﴾ (An-Nisāʾ 4:40); ﴿اِنَّ الشِّرْكَ لَظُلْمٌ عَظِيْمٌ﴾ (Luqmān 31:13)
(س) ظَلِمَ يَظْلَمُ ظَلَمًاẓalima yaẓlamu ẓalaman: to be dark; to grow dark.
ظُلْمَةٌẓulmah pl. ظُلُمٰتٌẓulumāt: darkness. ﴿اَللّٰهُ وَلِيُّ الَّذِيْنَ اٰمَنُوْا يُخْرِجُهُمْ مِّنَ الظُّلُمٰتِ اِلَي النُّوْرِ﴾ (Al-Baqarah 2:257)
Form IV (ifʿāl) اَظْلَمَ يُظْلِمُ اِظْلَامًاaẓlama yuẓlimu iẓlāman: to be in darkness; for darkness to fall.
مُظْلِمٌmuẓlim (active participle, ism fāʿil): one who is in darkness. ﴿وَاِذَآ اَظْلَمَ عَلَيْهِمْ قَامُوْا﴾ (Al-Baqarah 2:20)