an adherent or supporter of a person, group, party, or cause, esp. a person who shows a biased, emotional allegiance.
2.
Military. a member of a party of light or irregular troops engaged in harassing an enemy, esp. a member of a guerrilla band engaged in fighting or sabotage against an occupying army.
–adjective
3.
of, pertaining to, or characteristic of partisans; partial to a specific party, person, etc.: partisan politics.
4.
of, pertaining to, or carried on by military partisans or guerrillas.
A fervent, sometimes militant supporter or proponent of a party, cause, faction, person, or idea.
A member of an organized body of fighters who attack or harass an enemy, especially within occupied territory; a guerrilla.
adj.
Of, relating to, or characteristic of a partisan or partisans.
Devoted to or biased in support of a party, group, or cause: partisan politics.
[French, from Old French, from Old Italian dialectal partisano, variant of Old Italian partigiano, from parte, part, from Latin pars, part-; see part.] par'ti·san·ship' n.