unpartial

From un- +‎ partial.

• (UK) IPA^(key): /ʌnpɑːʃl̩/

unpartial (comparative more unpartial, superlative most unpartial)

1. Impartial, unbiased. [from 16th c.]
   • 1613, John Marston, William Barksted, The Insatiate Countess, IV.1:

     Justice, that makes princes like the gods, / Draws us unto the Senate, / That with unpartial balance we may poise / The crimes and innocence of all offenders.

   • Bishop Robert Sanderson

     […] we are to take a second surview of our Abilities, to see if they be competently fit for that whereto our Inclination swayeth us; and if upon due unpartial examination we find they are, we may then follow the sway of our Inclination.

   • 1998, Baltic News Service, 4 March:

     The Liberal Union […] approves the idea of guaranteeing an unpartial and proper trial.

2. Not partial (to); antagonistic. [from 19th c.]
   • 2014, Technology Tell, 16 May:

     I’m particularly unpartial to Bluetooth with its pairing hassles (the K-750s use an RF interface and a USB receiver dongle), but for the past 3-1/2 years, Bluetooth keyboards have been the only external input devices supported on the iPad and other iOS machines.

• unpartially

• tarpaulin