Extreme Adjectives: Negative

Adjective very loud
deafening
WHAT?! I CAN'T HEAR YOU! THE JET'S ENGINES ARE DEAFENING!
causing or involving great suffering, fear, or unhappiness
dreadful
She woke up at night because of dreadful nightmares.
Adjective very dirty
filthy
Ah, don't let that dog near me! Running through the mud -- he's filthy!
Adjective very angry
furious
I don't like playing boardgames with the guys. They're always furious when they lose.
Adjective very ugly or disgusting
hideous
This portrait is hideous! I wonder who that is in the painting.
Adjective very bad
horrendous
There was a horrendous fire on the ship. Smoke and flames were everywhere.
Adjective extremely crowded or full to capacity
jam-packed
This subway car is jam-packed. No room to move!