The word(s) "indecency" appears 18 time(s) in 17 verse(s) in Quran in Muhammad Habib Shakir translation.

(11) And go not nigh to fornication; surely it is an indecency and an evil way.

(12) O you who believe! do not follow the footsteps of the Shaitan, and whoever follows the footsteps of the Shaitan, then surely he bids the doing of indecency and evil; and were it not for Allah's grace upon you and His mercy, not one of you would have ever been pure, but Allah purifies whom He pleases; and Allah is Hearing, Knowing.

(13) And (We sent) Lut, when he said to his people: What! do you commit indecency while you see?

(14) And (We sent) Lut when he said to his people: Most surely you are guilty of an indecency which none of the nations has ever done before you;

(15) Recite that which has been revealed to you of the Book and keep up prayer; surely prayer keeps (one) away from indecency and evil, and certainly the remembrance of Allah is the greatest, and Allah knows what you do.

(16) O wives of the prophet! whoever of you commits an open indecency, the punishment shall be increased to her doubly; and this is easy to Allah.

(17) O Prophet! when you divorce women, divorce them for~ their prescribed time, and calculate the number of the days prescribed, and be careful of (your duty to) Allah, your Lord. Do not drive them out of their houses, nor should they themselves go forth, unless they commit an open indecency; and these are the limits of Allah, and whoever goes beyond the limits of Allah, he indeed does injustice to his own soul. You do not know that Allah may after that bring about reunion.