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

(11) They assign to Allah that which they dislike (for themselves), and their tongues assert the falsehood that the better things will be theirs. No doubt for them is the Fire, and they will be the first to be hastened on into it, and left there neglected. (Tafsir Al-Qurtubi)

(12) It is only those who believe not in the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, who fabricate falsehood, and it is they who are liars.

(13) Glorified and Exalted be He! High above (the great falsehood) that they say! (i.e. forged statements that there are other gods along with Allah, but He is Allah, the One, the Self-Sufficient Master, Whom all creatures need. He begets not, nor was He begotten, and there is none comparable or coequal unto Him).

(14) And say: "Truth (i.e. Islamic Monotheism or this Qur'an or Jihad against polytheists) has come and Batil (falsehood, i.e. Satan or polytheism) has vanished. Surely Batil is ever bound to vanish."

(15) Nay, We fling (send down) the truth (this Qur'an) against the falsehood (disbelief), so it destroys it, and behold, it (falsehood) is vanished. And woe to you for that (lie) which you ascribe (to Allah by uttering that Allah has a wife and a son).

(16) Never did We send a Messenger or a Prophet before you but when he did recite the revelation or narrated or spoke, Shaitan (Satan) threw (some falsehood) in it. But Allah abolishes that which Shaitan (Satan) throws in. Then Allah establishes His Revelations. And Allah is All-Knower, All-Wise:

(17) That is because Allah - He is the Truth (the only True God of all that exists, Who has no partners or rivals with Him), and what they (the polytheists) invoke besides Him, it is Batil (falsehood). And verily, Allah - He is the Most High, the Most Great.

(18) And those who turn away from Al-Laghw (dirty, false, evil vain talk, falsehood, and all that Allah has forbidden).

(19) And those who do not bear witness to falsehood, and if they pass by some evil play or evil talk, they pass by it with dignity.

(20) Till, when they come (before their Lord at the place of reckoning), He will say: "Did you deny My Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) whereas you comprehended them not by knowledge (of their truth or falsehood), or what (else) was it that you used to do?"