Sin in Islam

Kāfir (; ) is an Islamic term of Arabic origin used by Muslims to refer to non-Muslims who deny the God in Islam, reject his authority, and do not accept the message of Islam as truth.

polytheism in Islamic terminology

Zināʾ () or zinā ( or ) is an Islamic legal term referring to unlawful sexual intercourse. According to traditional jurisprudence, zina can include adultery, fornication, prostitution, sodomy, incest, and bestiality. Zina must be proved by testimony of four Muslim eyewitnesses to the actual act of penetration, confession repeated four times and not retracted later. The offenders must have acted of their own free will. Rapists could be prosecuted under different legal categories which used normal evidentiary rules. Accusing zina without presenting the required eyewitnesses is called qadhf (), w

Fasiq ( fāsiq) is an Arabic term referring to someone who violates Islamic law. As a fasiq is considered unreliable, his testimony is not accepted in Islamic courts. The terms fasiq and fisq are sometime rendered as "impious", "venial sinner", or "depraved".

transgression against Islamic commandments or precepts

Ghibah ( ) is backbiting as understood in Islam. It is generally regarded as a major sin in Islam and compared in the Qur'an to 'the abomination of eating the flesh of a dead brother'.

Israf (, ) is an Arabic term used in Islamic law, roughly translated as "extravagance" or "wasteful expenditure."

In Islam, Maisir ( or qimâr) refers to gambling. Maisir is totally prohibited by Islamic law (Sharia) on the grounds that:the agreement between participants is based on immoral inducement provided by entirely wishful hopes in the participants' minds that they will gain by mere chance, with no consideration for the possibility of loss.

one of the Major sins in Islam