English to English

noun (n)

• an inclination to favor one group or view or opinion over alternatives(noun.cognition)

  Synonym:
  partiality
  Antonym:
  impartiality, nonpartisanship
  

  source: wordnet30
• The state of being a partisan, or adherent to a party; feelings or conduct appropriate to a partisan.(noun)

  source: webster1913