A person or activity that is considerably more extreme than
hardcore. Usually describing the focus of an activity or person that is so intense, only the ones who disregard personal safety, friends, family, responsibilities and
time to achieve it.
When the term
hardcore doesn't define the experience or person well enough.
Spending 12 hours a day raiding for
purple gear in
WoW is diecore!
That
kid is going to attempt a 720° backflip off that rail grind. He's not crazy, he's just diecore.