The word(s) "awful" appears 87 time(s) in 80 verse(s) in Quran in Muhammad Pickthal translation.

(61) (And it was said unto him): O David! Lo! We have set thee as a viceroy in the earth; therefor judge aright between mankind, and follow not desire that it beguile thee from the way of Allah. Lo! those who wander from the way of Allah have an awful doom, forasmuch as they forgot the Day of Reckoning.

(62) Is he then, who will strike his face against the awful doom upon the Day of Resurrection (as he who doeth right)? And it will be said unto the wrong-doers: Taste what ye used to earn.

(63) And though those who do wrong possess all that is in the earth, and therewith as much again, they verily will seek to ransom themselves therewith on the Day of Resurrection from the awful doom; and there will appear unto them, from their Lord, that wherewith they never reckoned.

(64) The folk of Noah and the factions after them denied (their messengers) before these, and every nation purposed to seize their messenger and argued falsely, (thinking) thereby to refute the Truth. Then I seized them, and how (awful) was My punishment.

(65) The Fire; they are exposed to it morning and evening; and on the day when the Hour upriseth (it is said): Cause Pharaoh's folk to enter the most awful doom.

(66) But verily We shall cause those who disbelieve to taste an awful doom, and verily We shall requite them the worst of what they used to do.

(67) And those who argue concerning Allah after He hath been acknowledged, their argument hath no weight with their Lord, and wrath is upon them and theirs will be an awful doom.

(68) Or have they partners (of Allah) who have made lawful for them in religion that which Allah allowed not? And but for a decisive word (gone forth already), it would have been judged between them. Lo! for wrong-doers is a painful doom.

(69) And accepteth those who do good works, and giveth increase unto them of His bounty. And as for disbelievers, theirs will be an awful doom.

(70) Beyond them there is hell, and that which they have earned will naught avail them, nor those whom they have chosen for protecting friends beside Allah. Theirs will be an awful doom.