Insurgent
WordNet
adjective
(1) In opposition to a civil authority or government
noun
(2) A member of an irregular armed force that fights a stronger force by sabotage and harassment
(3) A person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)
WiktionaryText
Etymology
From , accusative singular of , present active participle of ; compounded from + , compounded from + < .