Intransigent
INTRANSIGENT (adopted from the Fr. intransigeant, taken, through the Spanish intransigente, from the Lat. in, not, and transigere, to come to an understanding), one whose attitude is that of an irreconcilable. The term is used chiefly of politicians of an advanced type; those in complete antagonism to the existing form of government; but is especially applied on the continent of Europe to members of legislatures holding extreme Radical views. In this sense the word was first used in the political troubles which arose in Spain in the years 1873- 1874. Intransigentism implies an attitude of uncompromising disagreement with political opponents. The word is also used non-politically, in the sense of intractability and intolerance.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)