The word(s) "disbelief" appears 110 time(s) in 103 verse(s) in Quran in Mohsin Khan translation.

(71) And indeed We have distributed it (rain or water) amongst them in order that they may remember (the Grace of Allah,) but most men (refuse to accept the Truth or Faith and) accept nothing but disbelief or ingratitude.

(72) "That we may follow the sorcerers [who were on Fir'aun's (Pharaoh) religion of disbelief] if they are the winners."

(73) And whoever brings an evil deed (i.e. Shirk - polytheism, disbelief in the Oneness of Allah and every evil sinful deed), they will be cast down (prone) on their faces in the Fire. (And it will be said to them) "Are you being recompensed anything except what you used to do?"

(74) "Verily, you practise sodomy with men, and rob the wayfarer (travellers)! And practise Al-Munkar (disbelief and polytheism and every kind of evil wicked deed) in your meetings." But his people gave no answer except that they said: "Bring Allah's Torment upon us if you are one of the truthful."

(75) Recite (O Muhammad صلى الله عليه وسلم) what has been revealed to you of the Book (the Qur'an), and perform As-Salat (Iqamat-as-Salat). Verily, As-Salat (the prayer) prevents from Al-Fahsha' (i.e. great sins of every kind, unlawful sexual intercourse) and Al-Munkar (i.e. disbelief, polytheism, and every kind of evil wicked deed) and the remembering (praising) of (you by) Allah (in front of the angels) is greater indeed [than your remembering (praising) of Allah in prayers. And Allah knows what you do.

(76) Whosoever disbelieves will suffer from his disbelief, and whosoever does righteous good deeds (by practising Islamic Monotheism), then such will prepare a good place (in Paradise) for themselves (and will be saved by Allah from His Torment).

(77) And indeed We did send Messengers before you (O Muhammad صلى الله عليه وسلم) to their own peoples. They came to them with clear proofs, then, We took vengeance on those who committed crimes (disbelief, setting partners in worship with Allah, sins); and (as for) the believers, it was incumbent upon Us to help (them).

(78) "O my son! Aqim-As-Salat (perform As-Salat), enjoin (on people) Al-Ma'ruf - (Islamic Monotheism and all that is good), and forbid (people) from Al-Munkar (i.e. disbelief in the Oneness of Allah, polytheism of all kinds and all that is evil and bad), and bear with patience whatever befalls you. Verily, these are some of the important commandments (ordered by Allah with no exemption).

(79) And whoever disbelieves, let not his disbelief grieve you (O Muhammad صلى الله عليه وسلم). To Us is their return, and We shall inform them what they have done. Verily, Allah is the All-Knower of what is in the breasts (of men).

(80) And when a wave covers them like shades (i.e. like clouds or the mountains of sea-water), they invoke Allah, making their invocations for Him only. But when He brings them safe to land, there are among them those that stop in between (Belief and disbelief). But none denies Our Signs except every perfidious ingrate.