(ض) خَصَمَ يَخْصِمُ خَصْمًاkhaṣama yakhṣimu khaṣman: to dispute verbally, to prevail in argument.
خَصْمٌkhaṣm (noun, ism dhāt): مدِّmddi opponent, party to a lawsuit. ﴿هٰذٰنِ خَصْمٰنِ اخْتَصَمُوْا فِيْ رَبِّهِمْ﴾ (Al-Ḥajj 22:19)
خَصِمٌkhaṣim pl. خَصِمُوْنَkhaṣimūna (adjective): quarrelsome. ﴿بَلْ هُمْ قَوْمٌ خَصِمُوْنَ﴾ (Az-Zukhruf 43:58)
خِصَامٌkhiṣām: dispute. ﴿وَهُوَ اَلَدُّ الْخِصَامِ﴾ (Al-Baqarah 2:204)
خَصِيْمٌkhaṣīm (adjective on the pattern فَعِيْلٌfaʿīl): one who is always arguing, an advocate pleading a cause. ﴿وَلَا تَكُنْ لِّلْخَآئِنِيْنَ خَصِيْمًا﴾ (An-Nisāʾ 4:105)
Form VIII (iftiʿāl) اِخْتَصَمَ يَخْتَصِمُ اِخْتِصَامًاikhtaṣama yakhtaṣimu ikhtiṣāman: to engage in dispute, to quarrel with one another. ﴿اِذْ يَخْتَصِمُوْنَ﴾ (Ṣād 38:69)