The word(s) "so-called" appears 20 time(s) in 18 verse(s) in Quran in Mohsin Khan translation.

(1) And they assign to Allah a share of the tilth and cattle which He has created, and they say: "This is for Allah according to their claim, and this is for our (Allah's so-called) partners." But the share of their (Allah's so-called) "partners" reaches not Allah, while the share of Allah reaches their (Allah's so-called) "partners"! Evil is the way they judge!

(2) And so to many of the Mushrikun (polytheists - see V.2:105) their (Allah's so-called) "partners" have made fair-seeming the killing of their children, in order to lead them to their own destruction and cause confusion in their religion. And if Allah had willed, they would not have done so. So leave them alone with their fabrications.

(3) Have they feet wherewith they walk? Or have they hands wherewith they hold? Or have they eyes wherewith they see? Or have they ears wherewith they hear? Say (O Muhammad صلى الله عليه وسلم): "Call your (so-called) partners (of Allah) and then plot against me, and give me no respite!

(4) And the Day whereon We shall gather them all together, then We shall say to those who did set partners in worship with Us: "Stop at your place! You and your partners (whom you had worshipped in the worldly life)." then We shall separate them, and their (Allah's so-called) partners shall say: "It was not us that you used to worship."

(5) Say: "Is there of your (Allah's so-called) partners one that guides to the truth?" Say: "It is Allah Who guides to the truth. Is then He Who guides to the truth more worthy to be followed, or he who finds not guidance (himself) unless he is guided? Then, what is the matter with you? How judge you?"

(6) No doubt! Verily, to Allah belongs whosoever is in the heavens and whosoever is in the earth. And those who worship and invoke others besides Allah, in fact they follow not (Allah's so-called) partners, they follow only a conjecture and they only invent lies.

(7) And when those who associated partners with Allah see their (Allah's so-called) partners, they will say: "Our Lord! These are our partners whom we used to invoke besides you." But they will throw back their word at them (and say): "Surely! You indeed are liars!"

(8) And (remember) the Day He will say: "Call those (so-called) partners of Mine whom you pretended." Then they will cry unto them, but they will not answer them, and We shall put a Maubiq (barrier) between them.

(9) Nay, but they (the so-called gods) will deny their worship of them, and become opponents to them (on the Day of Resurrection).

(10) Is not He (better than your so-called gods) Who originates creation, and shall thereafter repeat it, and Who provides for you from heaven and earth? Is there any ilah (god) with Allah? Say: "Bring forth your proofs, if you are truthful."