The word(s) "certain" appears 184 time(s) in 178 verse(s) in Quran in Mohsin Khan translation.

(111) Verily as for those who believed and did righteous deeds, certainly We shall not make the reward of anyone who does his (righteous) deeds in the most perfect manner to be lost.

(112) He said: "So (it will be). Your Lord says: It is easy for Me. certainly I have created you before, when you had been nothing!"

(113) Have you seen him who disbelieved in Our Ayat (this Qur'an and Muhammad صلى الله عليه وسلم) and said: "I shall certainly be given wealth and children [if I will be alive (again)]."

(114) Musa (Moses) said: "Then go away! And verily, your (punishment) in this life will be that you will say: "Touch me not (i.e. you will live alone exiled away from mankind); and verily (for a future torment), you have a promise that will not fail. And look at your ilah (god) to which you have been devoted. We will certainly burn it, and scatter its particles in the sea."

(115) And if We had destroyed them with a torment before this (i.e. Messenger Muhammad صلى الله عليه وسلم and the Qur'an), they would surely have said: "Our Lord! If only You had sent us a Messenger, we should certainly have followed Your Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), before we were humiliated and disgraced."

(116) They cried: "Woe to us! certainly we have been Zalimun (polytheists, wrong-doers and disbelievers in the Oneness of Allah)."

(117) And (remember) Dawud (David) and Sulaiman (Solomon), when they gave judgement in the case of the field in which the sheep of certain people had pastured at night; and We were witness to their judgement.

(118) certainly you (disbelievers) and that which you are worshipping now besides Allah, are (but) fuel for Hell! (Surely), you will enter it.

(119) And surely, the Hour is coming, there is no doubt about it; and certainly, Allah will resurrect those who are in the graves.

(120) He calls unto him whose harm is nearer than his profit: certainly, an evil Maula (patron) and certainly an evil friend!