The word(s) "expiate" appears 14 time(s) in 14 verse(s) in Quran in Mohsin Khan translation.

(11) That He may admit the believing men and the believing women to Gardens under which rivers flow (i.e. Paradise), to abide therein forever, and He may expiate from them their sins; and that is with Allah a supreme success,

(12) (And remember) the Day when He will gather you (all) on the Day of Gathering, - that will be the Day of mutual loss and gain (i.e. loss for the disbelievers as they will enter the Hell-fire and gain for the believers as they will enter Paradise). And whosoever believes in Allah and performs righteous good deeds, He will expiate from him his sins, and will admit him to Gardens under which rivers flow (Paradise) to dwell therein forever; that will be the great success.

(13) That is the Command of Allah, which He has sent down to you; and whosoever fears Allah and keeps his duty to Him, He will expiate from him his sins, and will enlarge his reward.

(14) O you who believe! Turn to Allah with sincere repentance! It may be that your Lord will expiate from you your sins, and admit you into Gardens under which rivers flow (Paradise) - the Day that Allah will not disgrace the Prophet (Muhammad صلى الله عليه وسلم) and those who believe with him. Their Light will run forward before them and (with their Records - Books of deeds) in their right hands. They will say: "Our Lord! Keep perfect our Light for us [and do not put it off till we cross over the Sirat (a slippery bridge over the Hell) safely] and grant us forgiveness. Verily, You are Able to do all things."