A word used to describe the previously indescribable epicness of an event, person, place, or thing. It is optimally utilized when mediocre terms such as "Awesome" or "Amazing" fail to fully encompass how truly wonderful an event, person, place orething was/is. The root "Thile" is German. "Thile" itself is defined as being incredible beyond comparison.
That solo was so thiltastic! I think my face just melted off.
The best dang lookin' trou at West Point you've ever seen.
I can't believe my eyes! I think I'd actually take that troutastic out for a nice dinner and maybe for some PT afterwards. I can't believe I'm thinking this...