The word(s) "used" appears 281 time(s) in 264 verse(s) in Quran in Mohsin Khan translation.

(111) Those who disbelieved and hinder (men) from the Path of Allah, for them We will add torment to the torment because they used to spread corruption [by disobeying Allah themselves, as well as ordering others (mankind) to do so].

(112) And be not like her who undoes the thread which she has spun, after it has become strong, by taking your oaths as a means of deception among yourselves, lest a nation should be more numerous than another nation. Allah only tests you by this [i.e who obeys Allah and fulfils Allah's Covenant and who disobeys Allah and breaks Allah's Covenant]. And on the Day of Resurrection, He will certainly make clear to you that wherein you used to differ [i.e. a believer confesses and believes in the Oneness of Allah and in the Prophethood of Prophet Muhammad صلى الله عليه و سلم which the disbeliever denies and that is their difference amongst them in the life of this world] .

(113) And had Allah willed, He could have made you (all) one nation, but He sends astray whom He wills and guides whom He wills. But you shall certainly be called to account for what you used to do.

(114) Whatever is with you, will be exhausted, and whatever is with Allah (of good deeds) will remain. And those who are patient, We will certainly pay them a reward in proportion to the best of what they used to do .

(115) Whoever works righteousness - whether male or female - while he (or she) is a true believer (of Islamic Monotheism) verily, to him We will give a good life (in this world with respect, contentment and lawful provision), and We shall pay them certainly a reward in proportion to the best of what they used to do (i.e. Paradise in the Hereafter).

(116) And Allah puts forward the example of a township (Makkah), that dwelt secure and well-content: its provision coming to it in abundance from every place, but it (its people) denied the Favours of Allah (with ungratefulness). So Allah made it taste extreme of hunger (famine) and fear, because of that (evil, i.e. denying Prophet Muhammad صلى الله عليه و سلم) which they (its people) used to do .

(117) And unto those who are Jews, We have forbidden such things as We have mentioned to you (O Muhammad صلى الله عليه و سلم) before [see Verse 6:146]. And We wronged them not, but they used to wrong themselves.

(118) The Sabbath was only prescribed for those who differed concerning it, and verily, your Lord will judge between them on the Day of Resurrection about that wherein they used to differ.

(119) Each of those two gardens brought forth its produce, and failed not in the least therein, and We caused a river to gush forth in the midst of them.

(120) Then they both proceeded, till, when they came to the people of a town, they asked them for food, but they refused to entertain them. Then they found therein a wall about to collapse and he (Khidr) set it up straight. [Musa (Moses)] said: If you had wished, surely, you could have taken wages for it!"