The word(s) "mighty" appears 32 time(s) in 32 verse(s) in Quran in Abdullah Yusuf Ali translation.

(21) One day We shall seize you with a mighty onslaught: We will indeed (then) exact Retribution!

(22) "Taste thou (this)! Truly wast thou mighty, full of honour!

(23) Mention (Hud) one of 'Ad's (own) brethren: Behold, he warned his people about the winding Sand-tracts: but there have been warners before him and after him: "Worship ye none other than Allah: Truly I fear for you the Penalty of a mighty Day."

(24) The Day when they will hear a (mighty) Blast in (very) truth: that will be the Day of Resurrection.

(25) He was taught by one mighty in Power,

(26) That He is the Lord of Sirius (the mighty Star);

(27) For We sent against them a single mighty Blast, and they became like the dry stubble used by one who pens cattle.

(28) And that is indeed a mighty adjuration if ye but knew,-

(29) We sent aforetime our messengers with Clear Signs and sent down with them the Book and the Balance (of Right and Wrong), that men may stand forth in justice; and We sent down Iron, in which is (material for) mighty war, as well as many benefits for mankind, that Allah may test who it is that will help, Unseen, Him and His messengers: For Allah is Full of Strength, Exalted in Might (and able to enforce His Will).

(30) This is but one of the mighty (portents),