insurgent, insurrectionist, freedom fighter, rebel -- (a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions))
guerrilla, guerilla, irregular, insurgent -- (a member of an irregular armed force that fights a stronger force by sabotage and harassment)
Overview of adj insurgent
The adj insurgent has 1 sense
insurgent, seditious, subversive -- (in opposition to a civil authority or government)