militant
He rejects, almost militantly, the ideas of the group.
Books about vegetarian cookery do not need to be militantly anti-meat.
They are militantly anti- feminist

SMART Vocabulary: related words and phrases

Activism & pressure groups
active citizen
active citizenship
active resistance
activism
activist
circulator
citizen advocacy
clicktivism
clicktivist
counter-demonstrate
identity politics
insurgency
insurrection
interest group
lobbyist
special interest group
stage a demonstration
super-lobbyist
super-militant
take a kneeidiom

You can also find related words, phrases, and synonyms in the topics:

Strong-willed