The word(s) "painful" appears 73 time(s) in 73 verse(s) in Quran in Muhammad Pickthal translation.

(31) That ye serve none, save Allah. Lo! I fear for you the retribution of a painful Day.

(32) It was said (unto him): O Noah! Go thou down (from the mountain) with peace from Us and blessings upon thee and some nations (that will spring) from those with thee. (There will be other) nations unto whom We shall give enjoyment a long while and then a painful doom from Us will overtake them.

(33) Even thus is the grasp of thy Lord when He graspeth the townships while they are doing wrong. Lo! His grasp is painful, very strong.

(34) And they raced with one another to the door, and she tore his shirt from behind, and they met her lord and master at the door. She said: What shall be his reward, who wisheth evil to thy folk, save prison or a painful doom?

(35) For them is torment in the life of the world, and verily the doom of the Hereafter is more painful, and they have no defender from Allah.

(36) And Satan saith, when the matter hath been decided: Lo! Allah promised you a promise of truth; and I promised you, then failed you. And I had no power over you save that I called unto you and ye obeyed me. So blame not, but blame yourselves. I cannot help you, nor can ye help me, Lo! I disbelieved in that which ye before ascribed to me. Lo! for wrong-doers is a painful doom.

(37) By Allah, We verily sent messengers unto the nations before thee, but the devil made their deeds fairseeming unto them. So he is their patron this day, and theirs will be a painful doom.

(38) Lo! those who disbelieve the revelations of Allah, Allah guideth them not and theirs will be a painful doom.

(39) A brief enjoyment (will be theirs); and theirs a painful doom.

(40) And that those who believe not in the Hereafter, for them We have prepared a painful doom.