The word(s) "repentance" appears 16 time(s) in 16 verse(s) in Quran in Muhammad Pickthal translation.

(11) And (it was said unto him): Take in thine hand a branch and smite therewith, and break not thine oath. Lo! We found him steadfast, how excellent a slave! Lo! he was ever turning in repentance (to his Lord).

(12) And those who put away false gods lest they should worship them and turn to Allah in repentance, for them there are glad tidings. Therefor give good tidings (O Muhammad) to My bondmen

(13) The Forgiver of sin, the Accepter of repentance, the Stern in punishment, the Bountiful. There is no Allah save Him. Unto Him is the journeying.

(14) And He it is Who accepteth repentance from His bondmen, and pardoneth the evil deeds, and knoweth what ye do,

(15) O ye who believe! Let not a folk deride a folk who may be better than they (are), not let women (deride) women who may be better than they are; neither defame one another, nor insult one another by nicknames. Bad is the name of lewdness after faith. And whoso turneth not in repentance, such are evil-doers.

(16) O ye who believe! Turn unto Allah in sincere repentance! It may be that your Lord will remit from you your evil deeds and bring you into Gardens underneath which rivers flow, on the day when Allah will not abase the Prophet and those who believe with him. Their light will run before them and on their right hands; they will say: Our Lord! Perfect our light for us, and forgive us! Lo! Thou art Able to do all things.