Definition of "partisan" in English

noun

1. An adherent to a party or faction.

2. A fervent, sometimes militant, supporter or proponent of a party, cause, faction, person, or idea.

3. A member of a band of detached light, irregular troops acting behind occupying enemy lines in the ways of harassment or sabotage; a guerrilla fighter.

4. (now rare) The commander of a body of detached light troops engaged in making forays and harassing an enemy.

adjective

1. Serving as commander or member of a body of detached light troops.

   • partisan officer, partisan corps

2. Adherent to a party or faction; especially, having the character of blind, passionate, or unreasonable adherence to a party.

   • They were blinded by partisan zeal.

3. Devoted to or biased in support of a party, group, or cause.

   • partisan politics

noun

1. (historical) A long-handled spear with a triangular, double-edged blade having lateral projections, in some forms also used in boar hunting.

2. (obsolete) A soldier armed with such a weapon.