كَبَدٍ

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

كَبَدٌ is the natural state of this indefinite noun and it becomes كَبَدٍ due to: 1) a preposition that precedes it or 2) a possessed noun that precedes it or 3) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

Liver, Middle part, Misery, Distress, Trouble, Obstacle, Cavity of the belly, Hard straggle, Inside, Center, Side.

To wound in the liver, affect anyone painfully (cold), purpose a thing

نَكِرَةٌمُفْرَدٌمُذَكَّرٌمَجْرُوْرٌك ب دبَاب ضَرَبَكَبَدَ يَكْبِدُفَعَلٌاسْمٌالصِّفَاتُ المُشَبَّهَةُ
IndefiniteSingularMasculineGenitiveRootToilضPatternNounA quality or descriptive noun
Surah/Below is the 1 verse in the holy Quran, containing the indefinite, genitive nounكَبَدٍ
Verse
90-4Indeed, we have created man in toilلَقَدْ خَلَقْنَا الإِنْسَانَ فِي كَبَدٍ