Below you can find the In this religion the supreme sin of shirk polytheism or the denial of allah's unity is unforgivable Jeopardy Words Answer. The answer to In this religion the supreme sin of shirk polytheism or the denial of allah's unity is unforgivable has 5 letters. This clue belongs to the Religion category and is part of Jeopardy Word Level 1051. If you scroll near the bottom you will find other clues and answers part of level 1051