Translation of "diehard" - English-Spanish dictionary

diehard

noun 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

intransigente
a diehard conservative/fan

(Translation of “diehard” from the Cambridge English-Spanish Dictionary © Cambridge University Press)