Definition of reactionist in English:

reactionist

Pronunciation /rēˈakSH(ə)nəst/ /riˈækʃ(ə)nəst/

noun & adjective

See reaction

‘In every war it was the opportune time for the reactionist and commercial vulture to do his dirty work in the name of patriotism.’
  • ‘They are using their reactionist tactics to try and scare people away from real issues.’