noun
also par·ti·zan·ship ˈ ̷ ̷ ̷ ̷ ̷ ̷ˌship
: the quality or state of being a partisan: as
a. : adherence to a single person or thing (as a cause, group, political party)
b. : a strong or sometimes blind and unreasoning adherence to a single cause or group : bias , one-sidedness , prejudice
choose between violent partisanship and … cool detachment — J.F.Muehl
seen … clearly and in due proportion, freed from the mists of prejudice and partisanship — John Galsworthy
c. : conduct or attitudes resulting from or characterizing such adherence