Definition of monarchomachist in English:

monarchomachist

noun

historical
  • A person who fights against monarchy; an anti-monarchist. In earlier use: a person who argues against the Divine Right of monarchs.

Origin

Mid 17th century; earliest use found in John Corbet. From post-classical Latin monarchomachus + -ist.

Pronunciation

monarchomachist

/məˈnɑːkə(ʊ)ˌmakɪst/