partisanship.

Strong support for a party, group, or side, especially when it affects fair judgment.

Use it for

Words that belong together

• political partisanship
• overt partisanship

On the page

The committee's partisanship was visible in which evidence it chose not to discuss.

Usage notes

Primary category: academic / formal. Forms: Usually uncountable; no ordinary plural in this sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: analysis, explanation. Commonness: moderately common.