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

(91) Those who believe say: "Why is not a Surah (chapter of the Qur'an) sent down (for us)? But when a decisive Surah (explaining and ordering things) is sent down, and fighting (Jihad - holy fighting in Allah's cause) is mentioned (i.e. ordained) therein, you will see those in whose hearts is a disease (of hypocrisy) looking at you with a look of one fainting to death. But it was better for them (hypocrites, to listen to Allah and to obey Him).

(92) So flee to Allah (from His Torment to His Mercy - Islamic Monotheism). Verily, I (Muhammad صلى الله عليه وسلم) am a plain warner to you from Him.

(93) And set not up (or worship not) any other ilah (god) along with Allah [Glorified be He (Alone), Exalted above all that they associate as partners with Him]. Verily, I (Muhammad صلى الله عليه وسلم) am a plain warner to you from Him.

(94) Indeed Allah has heard the statement of her (Khaulah bint Tha'labah) that disputes with you (O Muhammad صلى الله عليه وسلم) concerning her husband (Aus bin As-Samit), and complains to Allah. And Allah hears the argument between you both. Verily, Allah is All-Hearer, All-Seer.

(95) And (remember) when 'Îsa (Jesus), son of Maryam (Mary), said: "O Children of Israel! I am the Messenger of Allah unto you, confirming the Taurat [(Torah) which came] before me, and giving glad tidings of a Messenger to come after me, whose name shall be Ahmad. But when he (Ahmad i.e. Muhammad صلى الله عليه وسلم) came to them with clear proofs, they said: "This is plain magic."

(96) Say (O Muhammad صلى الله عليه وسلم): "The knowledge (of its exact time) is with Allah only, and I am only a plain warner."

(97) He said: "O my people! Verily, I am a plain warner to you,

(98) And what will explain to you what is the Day of Sorting Out?