Robespierrist
/ˈrəʊbzpɪɛːrɪst/noun
A follower or supporter of Robespierre; a Jacobin.
adjective
Of, relating to, or supporting Robespierre or Robespierrists.
Origin
Early 19th century. From the name of Maximilien François Marie Isidore de Robespierre, one of the leaders in the French Revolution + -ist, after French robespierriste, noun and adjective.