Neutral means not taking sides or expressing an opinion.
Indifferent means having no particular interest or feeling for something.
Both words indicate a lack of strong feelings or opinions.
Example:
* "The judge remained neutral throughout the trial."
* "She was indifferent to his pleas."
Antonyms for neutral and indifferent include:
* Biased
* Partial
* Engaged
* Passionate
* Concerned
* Interested