ultraconservative
adjective
ul·tra·con·ser·va·tive
| \ ˌəl-trə-kən-ˈsər-və-tiv
\
\
Definition of ultraconservative
: extremely or extraordinarily conservative
an ultraconservative investment strategy
especially
: very strongly favoring, adhering to, or based upon the principles of conservatism (as in politics or religion)
ultraconservative politicians/views an ultraconservative religious sect