hard core

the firm, unyielding, or unchanging central part or group

adjective

  1. constituting or of a hard core
  2. absolute; unqualified: a hard-core radical
  3. explicit, rather than suggestive, in the portrayal of sexual acts; graphic: hard-core pornography

See hard core in American Heritage Dictionary 4

noun
  1. The most dedicated, unfailingly loyal faction of a group or organization: the hard core of the separatist movement.
  2. An intractable core or nucleus of a society, especially one that is stubbornly resistant to improvement or change.
  3. often hard·core (härdˈkôrˌ, -kōrˌ) A form of exceptionally harsh punk rock.

also hard·core

adjective
  1. Intensely loyal; die-hard: a hard-core secessionist; a hard-core golfer.
  2. Stubbornly resistant to improvement or change: hard-core poverty.
  3. Extremely graphic or explicit: hard-core pornography.

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hard core

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