"Partisan" refers to a strong supporter of a particular political party or cause. Partisans often prioritize their party's interests over others, leading to a division in opinions and actions. This term can apply to individuals, groups, or even media outlets that consistently align with one side of a political spectrum, such as Democrats or Republicans in the United States. In a broader context, "partisan" can also describe a member of an armed group fighting against an occupying force, especially during wartime. These partisans typically engage in guerrilla tactics to resist and undermine the authority of the occupying power, as seen in historical conflicts like World War II.