The word(s) "understand" appears 98 time(s) in 98 verse(s) in Quran in Mohsin Khan translation.

(21) Because of their breaking the covenant, and of their rejecting the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, and of their killing the Prophets unjustly, and of their saying: "Our hearts are wrapped (with coverings, i.e. we do not understand what the Messengers say)" - nay, Allah has set a seal upon their hearts because of their disbelief, so they believe not but a little.

(22) And when you proclaim the call for As-Salat [call for the prayer (Adhan )], they take it (but) as a mockery and fun; that is because they are a people who understand not.

(23) Say (O Muhammad صلى الله عليه وسلم): "Not equal are Al-Khabith (all that is evil and bad as regards things, deeds, beliefs, persons and foods) and At-Taiyyib (all that is good as regards things, deeds, beliefs, persons, foods), even though the abundance of Al-Khabith may please you." So fear Allah , O men of understanding in order that you may be successful.

(24) Allah has not instituted things like Bahirah , or Sa'ibah , or Wasilah , or Ham , (all these animals were liberated in honour of idols as practised by pagan Arabs in the pre-Islamic period). But those who disbelieve invent lies against Allah, and most of them have no understanding.

(25) (Remember) when Allah will say (on the Day of Resurrection). "O 'Îsa (Jesus), son of Maryam (Mary)! Remember My Favour to you and to your mother when I supported you with Ruh-ul-Qudus [Jibril (Gabriel)] so that you spoke to the people in the cradle and in maturity; and when I taught you writing, Al-Hikmah (the power of understanding), the Taurat (Torah) and the Injeel (Gospel); and when you made out of the clay a figure like that of a bird, by My Permission, and you breathed into it, and it became a bird by My Permission, and you healed those born blind, and the lepers by My Permission, and when you brought forth the dead by My Permission; and when I restrained the Children of Israel from you (when they resolved to kill you) as you came unto them with clear proofs, and the disbelievers among them said: 'This is nothing but evident magic.'"

(26) And of them there are some who listen to you; but We have set veils on their hearts, so they understand it not, and deafness in their ears; and even if they see every one of the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) they will not believe therein; to the point that when they come to you to argue with you, the disbelievers say: "These are nothing but tales of the men of old."

(27) And the life of this world is nothing but play and amusement. But far better is the house in the Hereafter for those who are Al-Muttaqun (the pious - See V.2:2). Will you not then understand?

(28) Say: "He has power to send torment on you from above or from under your feet, or to cover you with confusion in party strife, and make you to taste the violence of one another." See how variously We explain the Ayat (proofs, evidence, lessons, signs, revelations, etc.), so that they may understand.

(29) They are those whom We gave the Book, Al-Hukm (understanding of the religious laws), and Prophethood. But if these disbelieve therein (the Book, Al-Hukm and Prophethood), then, indeed We have entrusted it to a people (such as the Companions of Prophet Muhammad صلى الله عليه وسلم) who are not disbelievers therein.

(30) It is He Who has created you from a single person (Adam), and has given you a place of residing (on the earth or in your mother's wombs) and a place of storage [in the earth (in your graves) or in your father's loins]. Indeed, We have explained in detail Our revelations (this Qur'an) for people who understand.