Verses with the word dreadful in the Apocrypha (3 verses):

Wisdom of Solomon 10:16
She entered into the soul of the servant of the Lord, and withstood dreadful kings in wonders and signs;

Wisdom of Solomon 17:6
Only there appeared unto them a fire kindled of itself, very dreadful: for being much terrified, they thought the things which they saw to be worse than the sight they saw not.

Additions to Esther 15:6
Then having passed through all the doors, she stood before the king, who sat upon his royal throne, and was clothed with all his robes of majesty, all glittering with gold and precious stones; and he was very dreadful.