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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 ore thing 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.
by SwimmingFishy June 24, 2010
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