› serious or difficult to deal with and unlikely to change: Hard-core unemployment usually results when a worker is disabled and is not able to work. He will focus more on fighting hard-core antitrust cases. The two counties are predominantly sprawling suburbs and shore towns, with relatively few pockets of hard-core poverty and crime. hard-core homeless/unemployed
› used to describe the people who are most interested and involved in an organization, group, or activity: What the hard-core environmentalists want is punitive fossil-fuel restrictions. hard-core fans/supporters hard-core insurgents/terrorists
→ See also core, hard core