neutralparty

noun
UK /ˈnjuː.trəlˌpɑː.ti/
US /ˈnuː.trəlˌpɑːr.ti/

A neutral party is someone who does not pick a side in a fight or game.

The teacher acted as a neutral party when the two friends argued.


OTHER MEANINGS

2. A group or country that stays out of a war or disagreement.

Switzerland is famous for being a neutral party in many conflicts.

3. A person who listens to both sides without favoring either.

We asked Grandpa to be a neutral party and settle our bet.

4. In a game, a player who does not belong to either team.

Sam was a neutral party and just watched the match.