Diehard
"Diehard" in French
conservateur
(fanatically opposing progress)
déter
(thorough of in one's beliefs)
déterminé
(thorough of in one's beliefs)
entier
(unreasonably resisting change)
fanatique
(thorough of in one's beliefs)
illuminé
(thorough of in one's beliefs)
inflexible
(unreasonably resisting change)
intégriste
(thorough of in one's beliefs)
inébranlable
(unreasonably resisting change)
irréductible
(unreasonably resisting change)
réac
(fanatically opposing progress)
réactionnaire
(fanatically opposing progress)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.