الْفُجَّارَ (The wicked): Wickedness is stepping out of Allah’s orders and disobeying Him.
The reward of the wickedness is the Hell fire. Both words of wickedness and Hell fire are similar and homogeneous, suitable for each other.
The word (جَحِيمٍ) (Hell fire) in Arabic is derived from the word جحم)) which refers to intensive fire inflation, that is why this word is used in Arabic to describe an angry person to express that the anger inflames him. The Quranic context and style do not just state that the recompense of the wicked is Hell fire, rather, Allah (swt) confirms it by: