"insurgent" in the noun sense
1. 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)
2. guerrilla, guerilla, irregular, insurgent
a member of an irregular armed force that fights a stronger force by sabotage and harassment
"insurgent" in the adjective sense
1. insurgent, seditious, subversive
in opposition to a civil authority or government
Source: WordNet® (An amazing lexical database of English)
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