Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun third_party

2 senses of third party

Sense 1
third party -- (someone other than the principals who are involved in a transaction)
       => arbiter, arbitrator, umpire -- (someone chosen to judge and decide a disputed issue; "the critic was considered to be an arbiter of modern literature"; "the arbitrator's authority derived from the consent of the disputants"; "an umpire was appointed to settle the tax case")

Sense 2
third party -- (a political party organized in opposition to the major parties in a two-party system)
       => party, political party -- (an organization to gain political power; "in 1992 Perot tried to organize a third party at the national level")