Webster's 1913 Dictionary
PARTISANSHIP
PARTISANSHIP Par "ti *san *ship, n.
Defn: The state of being a partisan, or adherent to a party; feelings or conduct appropriate to a partisan.
New American Oxford Dictionary
partisanship
par ti san ship |ˈpärtəzənˌSHip ˈpɑːrtəznʃɪp | ▶noun prejudice in favor of a particular cause; bias: an act of blatant political partisanship.
Oxford Dictionary
partisanship
partisanship |ˈpɑːtɪz (ə )nʃɪp | ▶noun [ mass noun ] prejudice in favour of a particular cause; bias: an act of blatant political partisanship.
American Oxford Thesaurus
partisanship
partisanship noun we are here to promote voter registration for everyone, not to promote any one person's partisanship: bias, prejudice, one-sidedness, discrimination, favor, favoritism, partiality, sectarianism, factionalism.
Oxford Thesaurus
partisanship
partisanship noun bias, prejudice, one-sidedness, discrimination, favouritism, favour, unfair preference, partiality, sectarianism, factionalism; injustice, unfairness, inequity.
Sanseido Wisdom Dictionary
partisanship
p á r ti san sh ì p /-ʃɪ̀p /名詞 U (盲目的 )支持 (prejudice ).
The Wordsmith Dictionary