Wickedness, n.
1. The quality or state of being wicked; departure from the rules of the divine or the moral law; evil disposition or practices; immorality; depravity; sinfulness. God saw that the wickedness of man was great. Gen. vi. 5. Their inward part is very wickedness. Ps. v. 9.
2. A wicked thing or act; crime; sin; iniquity. I'll never care what wickedness I do, If this man comes to good. Shak.
Shades of meaning
Fernald has no entry of its own for wickedness; he lists it under abomination, sin.
He lists it without comment; the entries above explain its neighbors.