AWESOME

adj. awe-inspiring, awful, imposing, amazing, wonderful, breathtaking, marvellous, wondrous, moving, stirring, affecting, overwhelming, formidable, daunting, dreadful, fearsome, fearful, frightening, horrifying, terrifying, terrible; unbelievable, incredible; alarming, shocking, stunning, stupefying, astounding, astonishing, The eruption of Vesuvius in AD 67 must have been a truly awesome spectacle