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.