Terrible
Part of speech: adjective
Definition: Dreadful; causing alarm and fear. Most formidable. Intense; extreme in degree or extent. Unpleasant; disagreeable. Very bad; lousy.
Example sentence: Beauty is mysterious as well as terrible. God and devil are fighting there, and the battlefield is the heart of man.
Fearsome
Part of speech: adjective
Definition: frightening, especially in appearance.
Example sentence: I didn't for a moment doubt the choice, but if life is ever fearsome, it is truly fearsome then.