The word(s) "disbeliever" appears 377 time(s) in 355 verse(s) in Quran in Mohsin Khan translation.

(261) And He answers (the invocation of) those who believe (in the Oneness of Allah - Islamic Monotheism) and do righteous good deeds, and gives them increase of His Bounty. And as for the disbelievers, theirs will be a severe torment.

(262) And you will see them brought forward to it (Hell) made humble by disgrace, (and) looking with stealthy glance. And those who believe will say: "Verily, the losers are they who lose themselves and their families on the Day of Resurrection. Verily, the Zalimun [i.e. Al-Kafirun (disbelievers in Allah, in His Oneness and in His Messenger صلى الله عليه و سلم, polytheists, wrong-doers)] will be in a lasting torment. (Tafsir At-Tabari).

(263) And when the truth (this Qur'an) came to them, they (the disbelievers in this Qur'an) said: "This is magic, and we disbelieve therein."

(264) And were it not that mankind would have become of one community (all disbelievers, desiring worldly life only), We would have provided for those who disbelieve in the Most Gracious (Allah), silver roofs for their houses, and elevators whereby they ascend,

(265) Verily, the Mujrimun (criminals, sinners, disbelievers) will be in the torment of Hell to abide therein forever.

(266) (But they were aggressive), so he [Musa (Moses)] called upon his Lord (saying): "These are indeed the people who are Mujrimun (disbelievers, polytheists, sinners, criminals)."

(267) Are they better or the people of Tubba' and those before them? We destroyed them because they were indeed Mujrimun (disbelievers, polytheists, sinners, criminals).

(268) Say (O Muhammad صلى الله عليه و سلم) to the believers to forgive those who (harm them and) hope not for the Days of Allah (i.e. His Recompense), that He may recompense people, according to what they have earned (i.e. to punish these disbelievers who harm the believers).

(269) And to Allah belongs the kingdom of the heavens and the earth. And on the Day that the Hour will be established - on that Day the followers of falsehood (polytheists, disbelievers, worshippers of false deities) shall lose (everything).

(270) But as for those who disbelieved (it will be said to them): "Were not Our Verses recited to you? But you were proud, and you were a people who were Mujrimun (polytheists, disbelievers, sinners, criminals)."