Horrendous

From Latin horrendus, future participle of horrÄ“re ("to dread").

Full definition of horrendous

There was horrendous carnage at the scene of the plane crash.
My journey to work this morning was horrendous!
2012-03, William E. Carter, Merri Sue Carter, The British Longitude Act Reconsidered, But was it responsible governance to pass the Longitude Act without other efforts to protect British seamen? Or might it have been subterfugeâ€”a disingenuous attempt to shift attention away from the realities of their life at sea. Conditions were horrendous aboard most British naval vessels at the time. Scurvy and other diseases ran rampant, killing more seamen each year than all other causes combined, including combat.