The word(s) "unbeliever" appears 179 time(s) in 160 verse(s) in Quran in Abdullah Yusuf Ali translation.

(111) Call ye, then, upon Allah with sincere devotion to Him, even though the unbelievers may detest it.

(112) Now, when he came to them in Truth, from Us, they said, "Slay the sons of those who believe with him, and keep alive their females," but the plots of unbelievers (end) in nothing but errors (and delusions)!...

(113) "In derogation of Allah?" They will reply: "They have left us in the lurch: Nay, we invoked not, of old, anything (that had real existence)." Thus does Allah leave the unbelievers to stray.

(114) The unbelievers say: "Listen not to this Qur'an, but talk at random in the midst of its (reading), that ye may gain the upper hand!"

(115) But We will certainly give the unbelievers a taste of a severe Penalty, and We will requite them for the worst of their deeds.

(116) And the unbelievers will say: "Our Lord! Show us those, among Jinns and men, who misled us: We shall crush them beneath our feet, so that they become the vilest (before all)."

(117) But is the (unbelievers) are arrogant, (no matter): for in the presence of thy Lord are those who celebrate His praises by night and by day. And they never flag (nor feel themselves above it).

(118) When we give him a taste of some Mercy from Ourselves, after some adversity has touched him, he is sure to say, "This is due to my (merit): I think not that the Hour (of Judgment) will (ever) be established; but if I am brought back to my Lord, I have (much) good (stored) in His sight!" But We will show the unbelievers the truth of all that they did, and We shall give them the taste of a severe Penalty.

(119) And He listens to those who believe and do deeds of righteousness, and gives them increase of His Bounty: but for the unbelievers their is a terrible Penalty.

(120) When Our Clear Signs are rehearsed to them, the unbelievers say, of the Truth when it comes to them: "This is evident sorcery!"