The word(s) "surely" appears 50 time(s) in 49 verse(s) in Quran in Abdullah Yusuf Ali translation.

(31) The Unbelievers say, "Never to us will come the Hour": Say, "Nay! but most surely, by my Lord, it will come upon you;- by Him Who knows the unseen,- from Whom is not hidden the least little atom in the heavens or on earth: Nor is there anything less than that, or greater, but is in the Record Perspicuous:

(32) If it had been our Will, We could surely have blotted out their eyes; then should they have run about groping for the Path, but how could they have seen?

(33) He said: "I will go to my Lord! He will surely guide me!

(34) And that Our forces,- they surely must conquer.

(35) But it has already been revealed to thee,- as it was to those before thee,- "If thou wert to join (gods with Allah), truly fruitless will be thy work (in life), and thou wilt surely be in the ranks of those who lose (all spiritual good)".

(36) And your Lord says: "Call on Me; I will answer your (Prayer): but those who are too arrogant to serve Me will surely find themselves in Hell - in humiliation!"

(37) And among His Signs in this: thou seest the earth barren and desolate; but when We send down rain to it, it is stirred to life and yields increase. Truly, He Who gives life to the (dead) earth can surely give life to (men) who are dead. For He has power over all things.

(38) "And to our Lord, surely, must we turn back!"

(39) Had We so wiled, We could have shown them up to thee, and thou shouldst have known them by their marks: but surely thou wilt know them by the tone of their speech! And Allah knows all that ye do.

(40) "Ye will surely taste of the Tree of Zaqqum.