reactionary

plural of reactionist

Devoid of reactions; not reacting.

Quality of being reactionary.

(politics) The advocacy of reactionary political positions.

In terms of reactions (responses to stimuli).

plural of neo-reactionary

(politics, chiefly derogatory) Reacting against the (especially liberal) values of the modern world; now typically seen as characterised by opposition to egalitarianism, support for strong centralised government, and espousal of conservative economic policies.

(politics, chiefly derogatory) Someone who holds such views.

(chemistry) labware in which reactions are carried out