The word(s) "known" appears 43 time(s) in 42 verse(s) in Quran in Mohsin Khan translation.

(31) And he ['Îsa (Jesus), son of Maryam (Mary)] shall be a known sign for (the coming of) the Hour (Day of Resurrection) [i.e. 'Isa's (Jesus) descent on the earth]. Therefore have no doubt concerning it (i.e. the Day of Resurrection). And follow Me (Allah) (i.e. be obedient to Allah and do what He orders you to do, O mankind)! This is the Straight Path (of Islamic Monotheism, leading to Allah and to His Paradise).

(32) And admit them to Paradise which He has made known to them (i.e. they will know their places in Paradise better than they used to know their homes in the world). [Tafsir Ibn Kathir ]

(33) Had We willed, We could have shown them to you, and you should have known them by their marks; but surely, you will know them by the tone of their speech! And Allah knows (all) your deeds.

(34) When they came in to him and said: "Salam, (peace be upon you)!" He answered: "Salam, (peace be upon you)," and said: "You are a people unknown to me."

(35) So on that Day no question will be asked of man or jinns as to his sin, [because they have already been known from their faces either white (dwellers of Paradise - true believers of Islamic Monotheism) or black (dwellers of Hell - polytheists; disbelievers, criminals)].

(36) The Mujrimun (polytheists, criminals, sinners) will be known by their marks (black faces), and they will be seized by their forelocks and their feet.

(37) "All will surely be gathered together for appointed Meeting of a known Day.

(38) And indeed, you have already known the first form of creation (i.e. the creation of Adam): why then do you not remember (or take heed)?

(39) And (remember) when the Prophet (صلى الله عليه وسلم) disclosed a matter in confidence to one of his wives (Hafsah), then she told it (to another i.e. 'Aishah). And Allah made it known to him; he informed part thereof and left a part. Then when he told her (Hafsah) thereof, she said: "Who told you this?" He said: "The All-Knower, the All-Aware (Allah) has told me."

(40) "And that I had never known how my Account is!