The word(s) "dread" appears 21 time(s) in 21 verse(s) in Quran in Muhammad Pickthal translation.

(11) And We rained a rain upon them. dreadful is the rain of those who have been warned.

(12) But they denied him, and the dreadful earthquake took them, and morning found them prostrate in their dwelling place.

(13) So Allah warded off from him the evils which they plotted, while a dreadful doom encompassed Pharaoh's folk,

(14) He hath ordained for you that religion which He commended unto Noah, and that which We inspire in thee (Muhammad), and that which We commended unto Abraham and Moses and Jesus, saying: Establish the religion, and be not divided therein. dreadful for the idolaters is that unto which thou callest them. Allah chooseth for Himself whom He will, and guideth unto Himself him who turneth (toward Him).

(15) Who setteth up another god along with Allah. Do ye twain hurl him to the dreadful doom.

(16) Then see how (dreadful) was My punishment after My warnings!

(17) (The tribe of) A'ad rejected warnings. Then how (dreadful) was My punishment after My warnings.

(18) Then see how (dreadful) was My punishment after My warnings!

(19) Then see how (dreadful) was My punishment after My warnings!

(20) Allah hath prepared for them a dreadful doom. Evil indeed is that which they are wont to do.