diehard
US /ˈdaɪ.hɑːrd/
UK /ˈdaɪ.hɑːrd/
1.
irréductible
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
1.
irréductible
unwilling to change or give up your ideas or ways of behaving, even when there are good reasons to do so:
:
•
a diehard conservative