partisan
par‧ti‧san1 /ˌpɑːtəˈzæn, ˌpɑːtɪˈzæn $ ˈpɑːrtəzən, -sən/ 
adjective
1. strongly supporting a particular political party, plan, or leader, usually without considering the other choices carefully:
British newspapers are highly partisan.
2. relating to the fighting of an armed group against an enemy that has taken control of its country:
the nature of partisan warfare
partisan2 noun [countable]
a media campaign to represent Democrats as angry partisans
2. a member of an armed group that fights against an enemy that has taken control of its country
—partisanship noun [uncountable]
| I |
adjective1. strongly supporting a particular political party, plan, or leader, usually without considering the other choices carefully:
2. relating to the fighting of an armed group against an enemy that has taken control of its country:
| II |
noun [countable] Date: 1500-1600
Language: French
Origin: Old Italian partigiano, from parte 'party, part', from Latin pars; ⇨ part1
1. someone who strongly supports a political party, plan, or leader:Language: French
Origin: Old Italian partigiano, from parte 'party, part', from Latin pars; ⇨ part1
2. a member of an armed group that fights against an enemy that has taken control of its country
—partisanship noun [uncountable]