archconservative

[ ahrch-kuh n-sur-vuh-tiv ]
/ ˌɑrtʃ kənˈsɜr və tɪv /

adjective

consistently holding extremely conservative views: publisher of the city's archconservative newspaper.

noun

a person who holds extremely conservative views.

Origin of archconservative

probably earlier than 1960–65; arch-1 + conservative
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019