1. Devoted to a cause or party
   "The partisan crowd cheered loudly for their candidate";
   - partizan [rare]

1. An ardent and enthusiastic supporter of some person or activity
   "The partisan defended every decision made by his political party";
   - enthusiast, partizan [rare]
    
2. A fervent and even militant proponent of something
   "The political partisan passionately defended his views at every opportunity";
   - zealot, drumbeater
    
3. A pike with a long tapering double-edged blade with lateral projections; 16th and 17th centuries
   "The museum displayed a well-preserved partisan from the Thirty Years' War";
   - partizan [rare]

Derived forms: partisans

See also: party-spirited, tendentious

Type of: admirer, advocate, advocator, booster, champion, exponent, friend, pike, proponent, protagonist, supporter

Antonym: nonpartisan

Encyclopedia: Partisan