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partisan

noun

an adherent or supporter of a person, group, party, or cause, especially a person who shows a biased, emotional allegiance.
Military. a member of a party of light or irregular troops engaged in harassing an enemy, especially a member of a guerrilla band engaged in fighting or sabotage against an occupying army.

adjective

of, relating to, or characteristic of partisans; partial to a specific party, person, etc.: partisan politics.
of, relating to, or carried on by military partisans or guerrillas.

noun

a shafted weapon of the 16th and 17th centuries, having as a head a long spear blade with a pair of curved lobes at the base.

noun

an adherent or devotee of a cause, party, etc
1. a member of an armed resistance group within occupied territory, esp in Italy or the Balkans in World War II
2. (as modifier)partisan forces

adjective

of, relating to, or characteristic of a partisan
relating to or excessively devoted to one party, faction, etc; one-sidedpartisan control

noun

a spear or pike with two opposing axe blades or spikes

n.also partizan, 1550s, “one who takes part with another, zealous supporter,” from Middle French partisan (15c.), from dialectal upper Italian partezan (Tuscan partigiano) “member of a faction, partner,” from parte “part, party,” from Latin partem (nominative pars), see part (n.). Sense of “guerilla fighter” is first recorded 1690s. adj.1708 for warfare, 1842 for politics, from partisan (n.).