The word(s) "disbelieve" appears 631 time(s) in 561 verse(s) in Quran in Mohsin Khan translation.

(511) Shall We then treat the Muslims (believers of Islamic Monotheism, doers of righteous deeds) like the Mujrimun (criminals, polytheists and disbelievers, etc.)?

(512) And verily, those who disbelieve would almost make you slip with their eyes (through hatred) when they hear the Reminder (the Qur'an), and they say: "Verily, he (Muhammad صلى الله عليه وسلم) is a madman!"

(513) None will eat it except the Khati'un (sinners, disbelievers, polytheists).

(514) And indeed it (this Qur'an) will be an anguish for the disbelievers (on the Day of Resurrection).

(515) Upon the disbelievers, which none can avert,

(516) Though they shall be made to see one another [(i.e. on the Day of Resurrection), there will be none but see his father, children and relatives, but he will neither speak to them nor will ask them for any help]. The Mujrim, (criminal, sinner, disbeliever) would desire to ransom himself from the punishment of that Day by his children,

(517) Verily, man (disbeliever) was created very impatient;

(518) So what is the matter with those who disbelieve that they hasten to listen from you [O Muhammad صلى الله عليه وسلم), in order to belie you and to mock at you, and at Allah's Book (this Qur'an)].

(519) "And indeed they have led many astray. And (O Allah): 'Grant no increase to the Zalimun (polytheists, wrong-doers, and disbelievers) save error.'"

(520) And Nuh (Noah) said: "My Lord! Leave not one of the disbelievers on the earth!