(adjective and noun) In reference to a political or cultural movement, an organization, an association, or a category of criminal. crime, deviance or dissidence: the essential and dedicated members or actions who will not be dissuaded by threats or punishment and who will go all the way in pursuit of their aims; those who hang tough; winter soldier. Sometimes spelled as two words. Often the kind of thing is understood, for example "hardcore" instead of "hardcore porn".
"Al-Qaeda's hard core will not be dissuaded by the bombing of the communities in which they are based."
"Sacco was a hardcore anarchist; he never wavered in his professed beliefs, even when they put him in jail and condemned him to death."
"After the cops visited the commune the day-trippers left and only the hardcore people remained."
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