ح و بḥ-w-b
(ن) حَابَ يَحُوْبُ حَوْبًاḥāba yaḥūbu ḥawban: to commit a crime, to sin. The lexicographers say that the original sense is that of need and distress (حَاجَةḥājah), and sin is called ḥūb because it leads to ruin.
حُوْبḥūb (noun, ism dhāt): a great sin, a grave crime. Only once in the Quran, and that in the context of devouring the property of orphans: ﴿اِنَّهُۥ كَانَ حُوْبًا كَبِيْرًا﴾ (An-Nisāʾ 4:2)