Ivan the Terrible was a very messed up person, but his
people followed him no matter what. Probably out of fear. Many of his followers
dubbed him "Grozny" which some have translated to
mean "the Terrible" but actually means "the Awesome."
"Yeah man, that dude was all up in his face until the other dude went all grozny"
You can pretty much use
the word however you feel like. It can be used to convey
something horrible happening, like raping or pillaging in the 1500'
s, or being awesome in the 21st century. It's a very versatile word.