The word(s) "plain" appears 101 time(s) in 98 verse(s) in Quran in Mohsin Khan translation.

(71) It is not for a believer, man or woman, when Allah and His Messenger have decreed a matter that they should have any option in their decision. And whoever disobeys Allah and His Messenger, he has indeed strayed into a plain error.

(72) And those who annoy believing men and women undeservedly, they bear (on themselves) the crime of slander and plain sin.

(73) Say (O Muhammad صلى الله عليه وسلم to polytheists, pagans) "Who gives you provision from the heavens and the earth?" Say: "Allah. And verily, (either) we or you are rightly guided or in plain error."

(74) "And our duty is only to convey plainly (the Message)."

(75) "Then verily, I should be in plain error.

(76) And when it is said to them: "Spend of that with which Allah has provided you," those who disbelieve say to those who believe: "Shall we feed those whom, if Allah willed, He (Himself) would have fed? You are only in a plain error."

(77) Did I not command you, O Children of Adam, that you should not worship Shaitan (Satan). Verily, he is a plain enemy to you.

(78) And We have not taught him (Muhammad صلى الله عليه وسلم) poetry, nor is it suitable for him. This is only a Reminder and a plain Qur'an.

(79) We blessed him and Ishaq (Isaac). And of their progeny are (some) that do right, and some that plainly wrong themselves.

(80) Or is there for you a plain authority?