third party

American  

noun

1. any party to an incident, case, quarrel, etc., who is incidentally involved.

2. (in a two-party system) a political party formed as a dissenting or independent group from members of one or both of the two prevailing major parties.

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third party British  

noun

1. a person who is involved by chance or only incidentally in a legal proceeding, agreement, or other transaction, esp one against whom a defendant claims indemnity

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adjective

1. insurance providing protection against liability caused by accidental injury or death of other persons or damage to their property

   third-party insurance

Etymology

Origin of third party

An Americanism dating back to 1795–1805

Example Sentences

“I did not advocate on his behalf to any third party—not to a court, not to the press, not to the government,” she said.

From The Wall Street Journal

Beccuau said it was still unclear if a third party ordered the heist -- or indeed where the jewellery might be.

From Barron's

That includes advertising containing false promises and using third parties to solicit clients.

From Los Angeles Times

"We are going to elections," President Rumen Radev said on Friday after a third party declined a mandate to form a new government.

From Barron's

Rising lithium costs are unlikely to drag NIO’s margins much since a high share of customers opt for a battery swapping option in which battery costs are borne by a third party.

From The Wall Street Journal

Related Words

• mediator