insurgent
adjective
1. in opposition to a civil authority or government
Similar word(s): disloyal, seditious, subversive
noun
1. a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)
Similar word(s): insurrectionist, rebel
Definition categories: person, crusader, meliorist, reformer, reformist, revolutionary, revolutionist, subversive, subverter
2. a member of an irregular armed force that fights a stronger force by sabotage and harassment