The word(s) "curse" appears 55 time(s) in 47 verse(s) in Quran in Mohsin Khan translation.

(21) And who does more wrong than he who invents a lie against Allah. Such will be brought before their Lord, and the witnesses will say, "These are the ones who lied against their Lord!" No doubt! the curse of Allah is on the Zalimun (polytheists, wrong-doers, oppressors).

(22) And they were pursued by a curse in this world and (so they will be) on the Day of Resurrection. No doubt! Verily, 'Ad disbelieved in their Lord. So away with 'Ad, the people of Hud.

(23) They were pursued by a curse in this (deceiving life of this world) and (so they will be pursued by a curse) on the Day of Resurrection. Evil indeed is the gift gifted [i.e. the curse (in this world) pursued by another curse (in the Hereafter)].

(24) And those who break the Covenant of Allah, after its ratification, and sever that which Allah has commanded to be joined (i.e. they sever the bond of kinship and are not good to their relatives), and work mischief in the land, on them is the curse (i.e. they will be far away from Allah's Mercy), and for them is the unhappy (evil) home (i.e. Hell) .

(25) (Allah) said: "Then, get out from here, for verily, you are Rajim (an outcast or a cursed one)." [Tafsir At-Tabari]

(26) "And verily, the curse shall be upon you till the Day of Recompense (i.e. the Day of Resurrection)."

(27) So when you want to recite the Qur'an, seek refuge with Allah from Shaitan (Satan), the outcast (the cursed one).

(28) And man invokes (Allah) for evil as he invokes (Allah) for good and man is ever hasty [i.e., if he is angry with somebody, he invokes (saying): "O Allah! curse him" and that one should not do, but one should be patient].

(29) And (remember) when We told you: "Verily! Your Lord has encompassed mankind (i.e. they are in His Grip)." And We made not the vision which we showed you (O Muhammad as an actual eye-witness and not as a dream on the night of Al-Isra' ) but a trial for mankind, and (likewise) the accursed tree (Zaqqum, mentioned) in the Qur'an. We warn and make them afraid but it only increases them in naught save great disbelief, oppression and disobedience to Allah.

(30) And the fifth (testimony should be) the invoking of the curse of Allah on him if he be of those who tell a lie (against her).