The word(s) "why" appears 62 time(s) in 59 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) And they say: why is not a sign sent to him from his Lord? Say: The unseen is only for Allah; therefore wait-- surely I too, with you am of those who wait.

(22) Then, it may be that you will give up part of what is revealed to you and your breast will become straitened by it because they say: why has not a treasure been sent down upon him or an angel come with him? You are only a warner; and Allah is custodian over all things.

(23) But why were there not among the generations before you those possessing understanding, who should have forbidden the making of mischief in the earth, except a few of those whom We delivered from among them? And those who were unjust went after what they are made to enjoy of plenty, and they were guilty.

(24) And those who disbelieve say: why has not a sign been sent down upon him from his Lord? You are only a warner and (there is) a guide for every people.

(25) And those who disbelieve say: why is not a sign sent down upon him by his Lord? Say: Surely Allah makes him who will go astray, and guides to Himself those who turn (to Him).

(26) why do you not bring to us the angels if you are of the truthful ones?

(27) These our people have taken gods besides Him; why do they not produce any clear authority in their support? Who is then more unjust than he who forges a lie against Allah?

(28) When he said to his father; O my father! why do you worship what neither hears nor sees, nor does it avail you in the least:

(29) He shall say: My Lord! why hast Thou raised me blind and I was a seeing one indeed?

(30) And they say: why does he not bring to us a sign from his Lord? Has not there come to them a clear evidence of what is in the previous books?