Abstract: Al-Qur'an describes various forms of sin both applicatively and implicitly. but from various forms of different meanings. These all have a common thread of meaning so that in short it is immediately interpreted as sin. Although in fact there are many differences in understanding the essence of the sentences of the Qur'an which are interpreted as sin. The unification of meaning into one meaning, namely sin, makes the writer feel uneasy because reality has different applications and implications. Departing from a reflection to explore the true meaning that is appropriate to be attached to the pronunciation al-ithm and al-dhanb which have the meaning of sin. This happens because the author observes that many people understand and kno...