فُجُوْرَ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – فُجُوْرَ is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

الْفُجُوْرُ is the natural state of this definite noun and becomes الْفُجُوْرَ due to it being the: 1) المَفْعُوْلُ بِهِ object of a verb or 2) اسْمُ of إِنَّ or 3) خَبَرُ of كَانَ or 4) المَفْعُوْلُ فِيْهِ adverb of time or place or 5) المَفْعُوْلُ لَهُ noun that gives the reason for doing a thing or 6) المَفْعُوْلُ مَعَهُ noun that comes after the و which means “along with” or 7) المَفْعُوْلُ المُطْلَقُ is the مَصْدَرٌ of the verb occurring in the sentence or 8) الحَالُ adverb of manner or 9) التَّمْيِيْزُ noun that specifies the meaning of a vague word or 10) المُسْتَثْنَى noun that comes after إِلَّا meaning “except” or 11) المُنَادَى noun of calling or 12) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

الْفُجُوْرَ loses it’s definite article, becoming فُجُوْرَ due to it being a possessed noun

Wickedness, Evil

To water, pour forth, cleave, breakup, dig up, go aside from the right path.

Surah/Below is the only verse in the holy Quran containing accusative, possessed nounفُجُوْرَ
Verse
91-8then He inspired it about its wickedness and its righteousnessفَأَلْهَمَهَا فُجُوْرَهَا وَتَقْوَاهَا