KJV Dictionary Definition: sin
1. The voluntary departure of a moral agent from a known rule of rectitude or duty, prescribed by God; any voluntary transgression of the divine law, or violation of a divine command; a wicked act; iniquity. Sin is either a positive act in which a known divine law is violated, or it is the voluntary neglect to obey a positive divine command, or a rule of duty clearly implied in such command. Sin comprehends not action only, but neglect of known duty, all evil thoughts purposes, words and desires, whatever is contrary to God's commands or law. 1 John 3. Matt. 15. James 4. Sinner neither enjoy the pleasures of nor the peace of piety. Among divines, sin is original or actual. Actual sin, above defined, is the act of a moral agent in violating a known rule of duty. Original sin, as generally understood, is native depravity of heart to the divine will, that corruption of nature of deterioration of the moral character of man, which is supposed to be the effect of Adam's apostasy; and which manifests itself in moral agents by positive act of disobedience to the divine will, or by the voluntary neglect to comply with the express commands of God, which require that we should love God with all the heart and soul and strength and mind, and our neighbor as ourselves. This native depravity or alienation of affections from God and his law, is supposed to be what the apostle calls the carnal mind or mindedness, which is enmity against God, and is therefore denominated sin or sinfulness. Unpardonable sin, or blasphemy against the Holy Spirit, is supposed to be a malicious and obstinate rejection of Christ and the gospel plan of salvation, or a contemptuous resistance made to the influences and convictions of the Holy Spirit. Matt.12.
2. A sin-offering; an offering made to atone for sin. He hath made him to be sin for us, who knew no sin. 2 Cor 5.
3. A man enormously wicked. Not in use.
4. Sin differs from crime, not in nature, but in application. That which is a crime against society, is sin against God.
SIN'FUL, a. from sin.
1. Tainted with sin; wicked; iniquitous; criminal; unholy; as sinful men. Ah, sinful nation, a people laden with iniquity! Isa. 1.
2. Containing sin, or consisting in sin; contrary to the laws of God; as sinful actions; sinful thoughts; sinful words.
1. The quality of being sinful or contrary to the divine will; wickedness; iniquity; criminality; as the sinfulness of an action; the sinfulness of thoughts or purposes.
2. Wickedness; corruption; depravity; as the sinfulness of men or of the human race.