unneutral
/ʌnˈnjuːtrəl/Definitions
1. adjective
not impartial or unbiased
“The judge was accused of being unneutral in the high-profile case.”
2. adverb
in a way that is not impartial or unbiased
“He argued in an unneutral manner, clearly taking one side.”
3. noun
a quality of being not impartial or unbiased
“The politician’s unneutral stance on the issue sparked controversy.”