partisan
noun (1)
variants:
or less commonly partizan
Definition of partisan
(Entry 1 of 3)
1
: a firm adherent to a party, faction, cause, or person
especially
: one exhibiting blind, prejudiced, and unreasoning allegiance
political partisans who see only one side of the problem
2a
: a member of a body of detached light troops making forays and harassing an enemy
Peasant partisans assaulted the French army.
b
: a member of a guerrilla band operating within enemy lines
Polish partisans had blown up two trains — Springfield (Mass.) Union