2 verses have
tremendous
in Edition Clear Qur'an by Talal Itani / Al-A'raaf (The Heights)

7:59We sent Noah to his people. He said, “O my people! Worship God; you have no god other than Him. I fear for you the punishment of a tremendous Day.”

7:141Remember how We saved you from Pharaoh’s people, who subjected you to the worst of sufferings—killing your sons and sparing your women. In that was a tremendous trial from your Lord.