Definition of unpartisan in English:

unpartisan

Pronunciation /ˌʌnˌpɑːtɪˈzan/ /(ˌ)ʌnˈpɑːtɪz(ə)n/

adjective

  • Not partisan; not supporting a cause, party, or person, especially zealously or blindly.

Origin

Mid 19th century; earliest use found in New York Review. From un- + partisan.