Dreadful
From BiblePortal Wikipedia
Webster's Dictionary [1]
(1): ( a.) Inspiring awe or reverence; awful.
(2): ( a.) Full of dread or terror; fearful.
(3): ( a.) Inspiring dread; impressing great fear; fearful; terrible; as, a dreadful storm.
King James Dictionary [2]
Dreadful, a.
1. Impressing great fear terrible formidable as a dreadful storm, or dreadful night.
The great and dreadful day of the Lord. Malachi 4 .
2. Awful venerable.
How dreadful is this place. Genesis 48 .