pur et dur
/ˌpʊər eɪ ˈdʊə/noun
Politics. A member of a hard-line political party or faction; specifically (chiefly Canadian ) a (radical) sovereignist.
adjective
Of or relating to such a person; uncompromising in policy or principle.
Origin
1960s. From French pur et dur, adjective, noun from pur+ et and + dur hard.