Akademik

hard-core
adjective
1. stubbornly resistant to change or improvement
-

hard-core addicts

Similar to: ↑inflexible
2. intensely loyal
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his hard-core supporters

Syn: ↑hardcore
Similar to: ↑loyal
3. extremely explicit
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hard-core pornography

Syn: ↑hardcore
Similar to: ↑explicit, ↑expressed

Useful english dictionary. 2012.