The word(s) "understand" appears 86 time(s) in 86 verse(s) in Quran in Muhammad Habib Shakir translation.

(51) Fie on you and on what you serve besides Allah; what! do you not then understand?

(52) So We made Sulaiman to understand it; and to each one We gave wisdom and knowledge; and We made the mountains, and the birds to celebrate Our praise with Dawood; and We were the doers.

(53) Have they not travelled in the land so that they should have hearts with which to understand, or ears with which to hear? For surely it is not the eyes that are blind, but blind are the hearts which are in the breasts.

(54) And He it is Who gives life and causes death, and (in) His (control) is the alternation of the night and the day; do you not then understand?

(55) There is no blame on the blind man, nor is there blame on the lame, nor is there blame on the sick, nor on yourselves that you eat from your houses, or your fathers' houses or your mothers' houses, or your brothers' houses, or your sisters' houses, or your paternal uncles' houses, or your paternal aunts' houses, or your maternal uncles' houses, or your maternal aunts' houses, or what you possess the keys of, or your friends' (houses). It is no sin in you that you eat together or separately. So when you enter houses, greet your people with a salutation from Allah, blessed (and) goodly; thus does Allah make clear to you the communications that you may understand.

(56) Or do you think that most of them do hear or understand? They are nothing but as cattle; nay, they are straying farther off from the path.

(57) He said: The Lord of the east and the west and what is between them, if you understand.

(58) And whatever things you have been given are only a provision of this world's life and its adornment, and whatever is with Allah is better and more lasting; do you not then understand?

(59) And certainly We have left a clear sign of it for a people who understand.

(60) And (as for) these examples, We set them forth for men, and none understand them but the learned.