The word(s) "monotheism" appears 283 time(s) in 267 verse(s) in Quran in Mohsin Khan translation.

(181) And your Lord said: "Invoke Me, [i.e. believe in My Oneness (Islamic monotheism) and ask Me for anything] I will respond to your (invocation). Verily! Those who scorn My worship [i.e. do not invoke Me, and do not believe in My Oneness, (Islamic monotheism)] they will surely enter Hell in humiliation!"

(182) See you not those who dispute about the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah? How are they turning away [from the truth, (i.e. Islamic monotheism to the falsehood (i.e. polytheism)]?

(183) Then their Faith (in Islamic monotheism) could not avail them when they saw Our punishment. (Like) this has been the way of Allah in dealing with His slaves. And there the disbelievers lost utterly (when Our Torment covered them).

(184) Giving glad tidings [of Paradise to the one who believes in the Oneness of Allah (i.e. Islamic monotheism) and fears Allah much (abstains from all kinds of sins and evil deeds) and loves Allah much (performing all kinds of good deeds which He has ordained)], and warning (of punishment in the Hell-Fire to the one who disbelieves in the Oneness of Allah), but most of them turn away, so they hear not.

(185) Say (O Muhammad صلى الله عليه وسلم): "I am only a human being like you. It is revealed to me that your Ilah (God) is One Ilah (God - Allah), therefore take Straight Path to Him (with true Faith - Islamic monotheism) and obedience to Him, and seek forgiveness of Him. And woe to Al-Mushrikun (the polytheists, idolaters, disbelievers in the Oneness of Allah).

(186) Truly, those who believe (in the Oneness of Allah, and in His Messenger Muhammad صلى الله عليه وسلم - Islamic monotheism) and do righteous good deeds, for them will be an endless reward that will never stop (i.e. Paradise).

(187) And as for Thamud, We showed and made clear to them the Path of Truth (Islamic monotheism) through Our Messenger, (i.e. showed them the way of success), but they preferred blindness to guidance; so the Sa'iqah (a destructive awful cry, torment, hit, a thunderbolt) of disgracing torment seized them because of what they used to earn.

(188) And who is better in speech than he who [says: "My Lord is Allah (believes in His Oneness)," and then stands firm (acts upon His Order), and] invites (men) to Allah's (Islamic monotheism), and does righteous deeds, and says: "I am one of the Muslims."

(189) He (Allah) has ordained for you the same religion (Islamic monotheism) which He ordained for Nuh (Noah), and that which We have revealed to you (O Muhammad صلى الله عليه و سلم), and that which We ordained for Ibrahim (Abraham), Musa (Moses) and 'Îsa (Jesus) saying you should establish religion (i.e. to do what it orders you to do practically), and make no divisions in it (religion) (i.e. various sects in religion). Intolerable for the Mushrikun, is that (Islamic monotheism) to which you (O Muhammad صلى الله عليه و سلم) call them. Allah chooses for Himself whom He wills, and guides unto Himself who turns to Him in repentance and in obedience.

(190) So unto this (religion of Islam alone and this Qur'an) then invite (people) (O Muhammad صلى الله عليه و سلم), and stand firm [on Islamic monotheism by performing all that is ordained by Allah (good deeds), and by abstaining from all that is forbidden by Allah (sins and evil deeds)], as you are commanded, and follow not their desires but say: "I believe in whatsoever Allah has sent down of the Book [all the holy Books, - this Qur'an and the Books of the old from the Taurat (Torah), or the Injeel (Gospel) or the Pages of Ibrahim (Abraham)] and I am commanded to do justice among you. Allah is our Lord and your Lord. For us our deeds and for you your deeds. There is no dispute between us and you. Allah will assemble us (all), and to Him is the final return."