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

(101) Allah said: Lo! I send it down for you. And whoso disbelieveth of you afterward, him surely will I punish with a punishment wherewith I have not punished any of (My) creatures.

(102) Praise be to Allah, Who hath created the heavens and the earth, and hath appointed darkness and light. Yet those who disbelieve ascribe rivals unto their Lord.

(103) Had we sent down unto thee (Muhammad) (actual) writing upon parchment, so that they could feel it with their hands, those who disbelieve would have said: This is naught else than mere magic.

(104) Say (unto the disbelievers): Travel in the land, and see the nature of the consequence for the rejecters!

(105) Of them are some who listen unto thee, but We have placed upon their hearts veils, lest they should understand, and in their ears a deafness. If they saw every token they would not believe therein; to the point that, when they come unto thee to argue with thee, the disbelievers say: This is naught else than fables of the men of old.

(106) If thou couldst see when they are set before their Lord! He will say: Is not this real? They will say: Yea, verily, by our Lord! He will say: Taste now the retribution for that ye used to disbelieve.

(107) Say (O Muhammad, to the disbelievers): I say not unto you (that) I possess the treasures of Allah, nor that I have knowledge of the Unseen; and I say not unto you: Lo! I am an angel. I follow only that which is inspired in me. Say: Are the blind man and the seer equal? Will ye not then take thought?

(108) And forsake those who take their religion for a pastime and a jest, and whom the life of the world beguileth. Remind (mankind) hereby lest a soul be destroyed by what it earneth. It hath beside Allah no protecting ally nor intercessor, and though it offer every compensation it will not be accepted from it. Those are they who perish by their own deserts. For them is drink of boiling water and a painful doom, because they disbelieved.

(109) Those are they unto whom We gave the Scripture and command and prophethood. But if these disbelieve therein, then indeed We shall entrust it to a people who will not be disbelievers therein.

(110) Is he who was dead and We have raised him unto life, and set for him a light wherein he walketh among men, as him whose similitude is in utter darkness whence he cannot emerge? Thus is their conduct made fairseeming for the disbelievers.