This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The property of being sinful.

n. The result or product of being sinful.

n. The state or character of being sinful; especially, the quality of being contrary to the divine law; wickedness; depravity; moral corruption; iniquity: as, the sinfulness of an action; the sinfulness of thoughts or purposes.

n. estrangement from god

"Indeed, we see some men constant in sinfulness, inclining to that which He loveth not and transgressing in this the original intent and purpose of their creation, which is the love of the Truth, and drawing on themselves the wrath of their Lord, whilst we see others constant in seeking the satisfaction of their Creator and obeying"

unrighteousness   

mark of cain   

depravity    baseness    deceitfulness    worthlessness    wretchedness