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

(31) Now enjoy what ye have won, as lawful and good, and keep your duty to Allah. Lo! Allah is Forgiving, Merciful.

(32) And when Our clear revelations are recited unto them, they who look not for the meeting with Us say: Bring a Lecture other than this, or change it. Say (O Muhammad): It is not for me to change it of my accord. I only follow that which is inspired in me. Lo! if I disobey my Lord I fear the retribution of an awful Day.

(33) Say: Have ye considered what provision Allah hath sent down for you, how ye have made of it lawful and unlawful? Hath Allah permitted you, or do ye invent a lie concerning Allah?

(34) And (bidding you): Ask pardon of your Lord and turn to Him repentant. He will cause you to enjoy a fair estate until a time appointed. He giveth His bounty unto every bountiful one. But if ye turn away, lo! (then) I fear for you the retribution of an awful Day.

(35) And the (awful) Cry overtook those who did wrong, so that morning found them prostrate in their dwellings,

(36) And when Our commandment came to pass We saved Shu'eyb and those who believed with him by a mercy from Us; and the (awful) Cry seized those who did injustice, and morning found them prostrate in their dwellings,

(37) And verily messengers (of Allah) were mocked before thee, but long I bore with those who disbelieved. At length I seized them, and how (awful) was My punishment!

(38) Allah, unto Whom belongeth whatsoever is in the heavens and whatsoever is in the earth. and woe unto the disbelievers from an awful doom;

(39) Then the (awful) Cry overtook them at the sunrise.

(40) But the (awful) Cry overtook them at the morning hour,