The Collaborative International Dictionary
nonparty
nonparty \nonparty\, non-party \non-party\adj. 1. not based upon or representing political parties; as, a nonparty regime.
Wiktionary
nonparty
a. Not a party (social gathering), or not related to parties or partying. n. (context legal English) One who is not a party.
Usage examples of "nonparty".
Vinaver, two other cds, the Menshevik Bobrovsky, a Socialist Revolutionary, and one nonparty minister.