intransigent
From Longman Dictionary of Contemporary Englishintransigentin‧tran‧si‧gent /ɪnˈtrænsədʒənt/ adjective formal CHANGE YOUR MINDunwilling to change your ideas or behaviour, in a way that seems unreasonable SYN stubborn an intransigent attitude —intransigence noun [uncountable] He accused the government of intransigence.Examples from the Corpusintransigent• Conservatives have maintained an intransigent position on the war.Origin intransigent (1800-1900) Spanish intransigente, from transigir “to accept less than you originally wanted”