The word(s) "sinful" appears 9 time(s) in 9 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) Why do not the rabbis and the doctors of Law forbid them from their (habit of) uttering sinful words and eating things forbidden? Evil indeed are their works.

(2) When the suffering reached them from us, why then did they not learn humility? On the contrary their hearts became hardened, and Satan made their (sinful) acts seem alluring to them.

(3) Remember Satan made their (sinful) acts seem alluring to them, and said: "No one among men can overcome you this day, while I am near to you": But when the two forces came in sight of each other, he turned on his heels, and said: "Lo! I am clear of you; lo! I see what ye see not; Lo! I fear Allah: for Allah is strict in punishment."

(4) And the Book (of Deeds) will be placed (before you); and thou wilt see the sinful in great terror because of what is (recorded) therein; they will say, "Ah! woe to us! what a Book is this! It leaves out nothing small or great, but takes account thereof!" They will find all that they did, placed before them: And not one will thy Lord treat with injustice.

(5) And the sinful shall see the fire and apprehend that they have to fall therein: no means will they find to turn away therefrom.

(6) The Day when the Trumpet will be sounded: that Day, We shall gather the sinful, blear-eyed (with terror).

(7) Will be the food of the sinful,-

(8) Woe to each sinful dealer in Falsehoods:

(9) A lying, sinful forelock!