reactionary

adjective

Characterized by reaction, especially opposition to progress or liberalism; extremely conservative.

noun

An opponent of progress or liberalism; an extreme conservative.

Of or pertaining to reaction in general; consisting of or characterized by reflex or reciprocal action; reactive.

Specifically Of or pertaining to political reaction; favoring reaction: as, reactionary principles or movements.

noun

A promoter of reaction; specifically, one who attempts to check, undo, or reverse political action.

adjective

Being, causing, or favoring reaction.

noun

One who favors reaction, or seeks to undo political progress or revolution.

adjective

Opposed to change; urging a return to a previous state.

adjective

Very conservative.

noun

One who is opposed to change.