The word(s) "lewd" appears 18 time(s) in 17 verse(s) in Quran in Muhammad Pickthal translation.

(11) And unto Lot we gave judgment and knowledge, and We delivered him from the community that did abominations. Lo! they were folk of evil, lewd.

(12) And Lot! (Remember) when he said unto his folk: Lo! ye commit lewdness such as no creature did before you.

(13) Recite that which hath been inspired in thee of the Scripture, and establish worship. Lo! worship preserveth from lewdness and iniquity, but verily remembrance of Allah is more important. And Allah knoweth what ye do.

(14) O ye wives of the Prophet! Whosoever of you committeth manifest lewdness, the punishment for her will be doubled, and that is easy for Allah.

(15) And know that the messenger of Allah is among you. If he were to obey you in much of the government, ye would surely be in trouble; but Allah hath endeared the faith to you and hath beautified it in your hearts, and hath made disbelief and lewdness and rebellion hateful unto you. Such are they who are the rightly guided.

(16) O ye who believe! Let not a folk deride a folk who may be better than they (are), not let women (deride) women who may be better than they are; neither defame one another, nor insult one another by nicknames. Bad is the name of lewdness after faith. And whoso turneth not in repentance, such are evil-doers.

(17) If Thou shouldst leave them, they will mislead Thy slaves and will beget none save lewd ingrates.