The word(s) "falsehood" appears 46 time(s) in 44 verse(s) in Quran in Mohsin Khan translation.

(1) And mix not truth with falsehood, nor conceal the truth [i.e. Muhammad صلى الله عليه وسلم is Allah's Messenger and his qualities are written in your Scriptures, the Taurat (Torah) and the Injeel (Gospel)] while you know (the truth).

(2) O people of the Scripture (Jews and Christians): "Why do you mix truth with falsehood and conceal the truth while you know?"

(3) And whoever earns a fault or a sin and then throws it on to someone innocent, he has indeed burdened himself with falsehood and a manifest sin.

(4) (They like to) listen to falsehood, to devour anything forbidden. So if they come to you (O Muhammad صلى الله عليه وسلم), either judge between them, or turn away from them. If you turn away from them, they cannot hurt you in the least. And if you judge, judge with justice between them. Verily, Allah loves those who act justly.

(5) Say: "Bring forward your witnesses, who can testify that Allah has forbidden this. Then if they testify, testify not you (O Muhammad صلى الله عليه وسلم) with them. And you should not follow the vain desires of such as treat Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) as falsehoods, and such as believe not in the Hereafter, and they hold others as equal (in worship) with their Lord."

(6) O Children of Adam! We have bestowed raiment upon you to cover yourselves (screen your private parts) and as an adornment; and the raiment of righteousness, that is better. Such are among the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, that they may remember (i.e. leave falsehood and follow truth ).

(7) And We revealed to Musa (Moses) (saying): "Throw your stick," and behold! It swallowed up straight away all the falsehoods which they showed.

(8) That He might cause the truth to triumph and bring falsehood to nothing, even though the Mujrimun (disbelievers, polytheists, sinners, criminals) hate it.

(9) O you who believe! Verily, there are many of the (Jewish) rabbis and the (Christian) monks who devour the wealth of mankind in falsehood, and hinder (them) from the Way of Allah (i.e. Allah's religion of Islamic Monotheism). And those who hoard up gold and silver [Al-Kanz: the money, the Zakat of which has not been paid] and spend them not in the Way of Allah, announce unto them a painful torment.

(10) He sends down water (rain) from the sky, and the valleys flow according to their measure, but the flood bears away the foam that mounts up to the surface - and (also) from that (ore) which they heat in the fire in order to make ornaments or utensils, rises a foam like unto it, thus does Allah (by parables) show forth truth and falsehood . Then, as for the foam it passes away as scum upon the banks, while that which is for the good of mankind remains in the earth. Thus Allah sets forth parables (for the truth and falsehood, i.e. Belief and disbelief).