ف س دf-s-d
(ن) فَسَدَ يَفْسُدُ فَسَادًاfasada yafsudu fasādan: (of a thing) for its order to be disrupted, to be spoiled — the opposite of صَلَاحṣalāḥ. ﴿لَوْ كَانَ فِيْهِمَآ اٰلِهَةٌ اِلَّا اللّٰهُ لَفَسَدَتَا﴾ (Al-Anbiyāʾ 21:22)
فَسَادٌfasād (verbal noun (maṣdar), also a noun (ism dhāt)): disruption of order, corruption. ﴿ظَهَرَ الْفَسَادُ فِي الْبَرِّ وَالْبَحْرِ﴾ (Ar-Rūm 30:41)
Form IV (ifʿāl) اَفْسَدَ يُفْسِدُ اِفْسَادًاafsada yufsidu ifsādan: to disrupt the order of something, to spoil it. ﴿وَلَا تُفْسِدُوْا فِي الْاَرْضِ بَعْدَ اِصْلَاحِهَا﴾ (Al-Aʿrāf 7:56); مُفْسِدٌmufsid (active participle (ism fāʿil)): one who causes corruption. ﴿وَاللّٰهُ يَعْلَمُ الْمُفْسِدَ مِنَ الْمُصْلِحِ﴾ (Al-Baqarah 2:220)