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English definition of “diehard”

diehard

noun [C] uk   /ˈdaɪ.hɑːd/ us    /-hɑːrd/ disapproving
someone who is unwilling to change or give up their ideas or ways of behaving, even when there are good reasons to do so: a diehard conservative/fan
(Definition of diehard from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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SMART Thesaurus: Stubborn and determined people

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