Adjective hard core has 3 senses
- hard-core, hardcore - stubbornly resistant to change or improvement; "hard-core addicts"
Antonym: flexible (indirect, via inflexible)
- hard-core, hardcore - intensely loyal; "his hard-core supporters"
Antonym: disloyal (indirect, via loyal)
- hard-core, hardcore - extremely explicit; "hard-core pornography"
Antonyms: implicit, inexplicit (indirect, via explicit)
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Noun hard core has 1 sense
- hard core - the most dedicated and intensely loyal nucleus of a group or movement
--1 is a kind of clique, coterie, ingroup, inner circle, pack, camp
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