The word(s) "repent" appears 115 time(s) in 99 verse(s) in Quran in Mohsin Khan translation.

(41) And to Thamud (people We sent) their brother Salih. He said: "O my people! Worship Allah: you have no other ilah (god) but Him. He brought you forth from the earth and settled you therein, then ask forgiveness of Him and turn to Him in repentance. Certainly, my Lord is Near (to all by His Knowledge), Responsive."

(42) Verily, Ibrahim (Abraham) was, without doubt, forbearing, used to invoking Allah with humility, and was repentant (to Allah all the time, again and again).

(43) He said: "O my people! Tell me if I have a clear evidence from my Lord and He has given me a good sustenance from Himself (shall I corrupt it by mixing it with the unlawfully earned money). I wish not, in contradiction to you, to do that which I forbid you. I only desire reform to the best of my power. And my guidance cannot come except from Allah, in Him I trust and unto Him I repent.

(44) "And ask forgiveness of your Lord and turn unto Him in repentance. Verily, my Lord is Most Merciful, Most Loving."

(45) So stand (ask Allah to make) you (Muhammad صلى الله عليه و سلم) firm and straight (on the religion of Islamic Monotheism) as you are commanded and those (your companions) who turn in repentance (unto Allah) with you, and transgress not (Allah's Legal Limits). Verily, He is All-Seer of what you do.

(46) "Kill Yusuf (Joseph) or cast him out to some (other) land, so that the favour of your father may be given to you alone, and after that you will be righteous folk (by intending repentance before committing the sin)."

(47) And those who disbelieved say: "Why is not a sign sent down to him (Muhammad صلى الله عليه و سلم) from his Lord?" Say: "Verily, Allah sends astray whom He wills and guides unto Himself those who turn to Him in repentance."

(48) Thus have We sent you (O Muhammad صلى الله عليه و سلم) to a community before whom other communities have passed away, in order that you might recite unto them what We have revealed to you, while they disbelieve in the Most Gracious (Allah) Say: "He is my Lord! La ilaha illa Huwa (none has the right to be worshipped but He)! In Him is my trust, and to Him will be my return with repentance."

(49) And (remember) the Day when We shall raise up from each nation a witness (their Messenger), then, those who disbelieved will not be given leave (to put forward excuses), nor will they be allowed (to return to the world) to repent and ask for Allah's Forgiveness (of their sins).

(50) Then, verily! Your Lord - for those who do evil (commit sins and are disobedient to Allah) in ignorance and afterward repent and do righteous deeds, verily, your Lord thereafter, (to such) is Oft-Forgiving, Most Merciful.