deadication
May refer to {1} a fanatical degree of determination that actually drives someone to pursue an interest or idea to the death, or {2} a super-hooked and eternally **grateful** fan of the (in)famous rock band.
I'm so filled with deadication that I'm gonna don my lightning-skull t-shirt and chain myself to a tree.
deadicate
dedicating something to a dead person.
I'd like to deadicate this song to the late Robin Williams