The word(s) "certain" appears 498 time(s) in 437 verse(s) in Quran in Muhammad Habib Shakir translation.

(311) And if We had pleased We would certainly have given to every soul its guidance, but the word (which had gone forth) from Me was just: I will certainly fill hell with the jinn and men together.

(312) And most certainly We will make them taste of the nearer chastisement before the greater chastisement that haply they may turn.

(313) And certainly We gave the Book to Musa, so be not in doubt concerning the receiving of it, and We made it a guide for the children of Israel.

(314) And We made of them Imams to guide by Our command when they were patient, and they were certain of Our communications.

(315) And if an entry were made upon them from the outlying parts of it, then they were asked to wage war, they would certainly have done it, and they would not have stayed in it but a little while.

(316) And certainly they had made a covenant with Allah before, that) they would not turn (their) backs; and Allah's covenant shall be inquired of.

(317) certainly you have in the Apostle of Allah an excellent exemplar for him who hopes in Allah and the latter day and remembers Allah much.

(318) If the hypocrites and those in whose hearts is a disease and the agitators in the city do not desist, We shall most certainly set you over them, then they shall not be your neighbors in it but for a little while;

(319) And those who disbelieve say: The hour shall not come upon us. Say: Yea! by my Lord, the Knower of the unseen, it shall certainly come upon you; not the weight of an atom becomes absent from Him, in the heavens or in the earth, and neither less than that nor greater, but (all) is in a clear book

(320) And certainly We gave to Dawood excellence from Us: O mountains! sing praises with him, and the birds; and We made the iron pliant to him,