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

(101) And all that they used to earn availed them not.

(102) For all that they used to do.

(103) Then, on the Day of Resurrection, He will disgrace them and will say: "Where are My (so called) partners concerning whom you used to disagree and dispute (with the believers, by defying and disobeying Allah)?" Those who have been given the knowledge (about the Torment of Allah for the disbelievers) will say: "Verily! Disgrace and misery this Day are upon the disbelievers.

(104) "Those whose lives the angels take while they are doing wrong to themselves (by disbelief and by associating partners in worship with Allah and by committing all kinds of crimes and evil deeds)." Then, they will make (false) submission (saying): "We used not to do any evil." (The angels will reply): "Yes! Truly, Allah is All-Knower of what you used to do.

(105) Those whose lives the angels take while they are in a pious state (i.e. pure from all evil, and worshipping none but Allah Alone) saying (to them): Salamun 'Alaikum (peace be on you) enter you Paradise, because of that (the good) which you used to do (in the world)."

(106) Do they (the disbelievers and polytheists) await but that the angels should come to them [to take away their souls (at death)], or there should come the command (i.e. the torment or the Day of Resurrection) of your Lord? Thus did those before them. And Allah wronged them not, but they used to wrong themselves.

(107) Then, the evil results of their deeds overtook them, and that at which they used to mock at surrounded them.

(108) And they assign a portion of that which We have provided them unto what they know not (false deities). By Allah, you shall certainly be questioned about (all) that you used to fabricate.

(109) And when those who associated partners with Allah see their (Allah's so-called) partners, they will say: "Our Lord! These are our partners whom we used to invoke besides you." But they will throw back their word at them (and say): "Surely! You indeed are liars!"

(110) And they will offer (their full) submission to Allah (Alone) on that Day, and their invented false deities [all that they used to invoke besides Allah, e.g. idols, saints, priests, monks, angels, jinn, Jibril (Gabriel), Messengers] will vanish from them.