The word(s) "disbelieve" appears 428 time(s) in 384 verse(s) in Quran in Muhammad Pickthal translation.

(341) Our Lord! Make us not a prey for those who disbelieve, and forgive us, our Lord! Lo! Thou, only Thou, are the Mighty, the Wise.

(342) O ye who believe! When believing women come unto you as fugitives, examine them. Allah is Best Aware of their faith. Then, if ye know them for true believers, send them not back unto the disbelievers. They are not lawful for them (the disbelievers), nor are they (the disbelievers) lawful for them. And give them (the disbelievers) that which they have spent (upon them). And it is no sin for you to marry such women when ye have given them their dues. And hold not to the ties of disbelieving women; and ask for (the return of) that which ye have spent; and let them (the disbelievers) ask for that which they have spent. That is the judgment of Allah. He judgeth between you. Allah is Knower, Wise.

(343) And if any of your wives have gone from you unto the disbelievers and afterward ye have your turn (of triumph), then give unto those whose wives have gone the like of that which they have spent, and keep your duty to Allah in Whom ye are believers.

(344) O ye who believe! Be not friendly with a folk with whom Allah is wroth, (a folk) who have despaired of the Hereafter as the disbelievers despair of those who are in the graves.

(345) Fain would they put out the light of Allah with their mouths, but Allah will perfect His light however much the disbelievers are averse.

(346) O ye who believe! Be Allah's helpers, even as Jesus son of Mary said unto the disciples: Who are my helpers for Allah? They said: We are Allah's helpers. And a party of the Children of Israel believed, while a party disbelieved. Then We strengthened those who believed against their foe, and they became the uppermost.

(347) That is because they believed, then disbelieved, therefore their hearts are sealed so that they understand not.

(348) He it is Who created you, but one of you is a disbeliever and one of you is a believer, and Allah is Seer of what ye do.

(349) Hath not the story reached you of those who disbelieved of old and so did taste the ill-effects of their conduct, and theirs will be a painful doom.

(350) That was because their messengers (from Allah) kept coming unto them with clear proofs (of Allah's Sovereignty), but they said: Shall mere mortals guide us? So they disbelieved and turned away, and Allah was independent (of them). Allah is Absolute, Owner of Praise.