Definition of diehard adjective from the Oxford Advanced American Dictionary

     

    diehard

     adjective
    adjective
    NAmE//ˈdaɪhɑrd//
     
     
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  1. 1 strongly opposing change and new ideas diehard conservatives
  2. 2 continuing to support something in spite of opposition She's a diehard Yankees fan.
diehardnoun
 
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A few diehards are trying to stop the reforms.