This game is a tactical treat for the hardcore boxing fan.
Times, Sunday Times (2009)
But hardcorefans are furious that she appears to have suddenly disappeared from YouTube's official list.
The Sun (2008)
Seekeen fan
Definition of 'hard-core'
hard-core
Explore 'hard-core' in the dictionary
singular noun [NOUN noun]
You can refer to the members of a group who are the most committed to its activities or who are the most involved in them as a hard coreof members or as the hard-core members.