The word(s) "tremendous" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) Allah wishes to accept your repentance, but those who follow their lusts, wish that you (believers) should deviate tremendously away (from the Right Path).

(2) Verily, Allah forgives not that partners should be set up with Him (in worship), but He forgives except that (anything else) to whom He wills; and whoever sets up partners with Allah in worship, he has indeed invented a tremendous sin.

(3) And (remember) when Musa (Moses) said to his people: "Call to mind Allah's Favour to you, when He delivered you from Fir'aun's (Pharaoh) people who were afflicting you with horrible torment, and were slaughtering your sons and letting your women alive; and in it was a tremendous trial from your Lord."