Definition of third party in English:

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third party

Pronunciation: /ˈˌTHər(d) ˈpärdē/


1A person or group besides the two primarily involved in a situation, especially a dispute.
Example sentences
  • In these circumstances, the asset given as security belongs to the defendant, not a third party.
  • What I wanted to ask you was, was there any possibility of a third party being involved in the dismemberment?
  • Here there is no need for a third party to have become involved.
1.1A political party organized as an alternative to the major parties in a two-party system.
Example sentences
  • It is, if you will, a conspiracy by the two parties to keep third parties out of the presidential debates.
  • It is New York's third party, the Conservative Party, that provides the best hope here.
  • Also, the Electoral College helps maintain a two-party system, by discouraging third parties with the winner-take-all principle.


Relating to a person or group besides the two primarily involved in a situation: third-party suppliers
More example sentences
  • Participating suppliers must submit to third-party audits and disclose energy sources to consumers.
  • Many e-commerce websites use online shopping carts provided by third-party suppliers.
  • There is no disinterested third-party witness to say who is telling the truth and who is lying.

For editors and proofreaders

Syllabification: third par·ty

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