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

Much of the growth came from the sale of newly originated leases to a third party, a new tactic for the company.

From Barron's

"After today's decision, justice must, without distraction, investigate the involvement of third parties in felony offenses," said Zacharias Kesses, a lawyer for victims of the Predator affair.

From BBC

Along with the change, Anthropic is committing to publishing regularly safety goals and risk reports evaluating its models that will be measured by a third party.

From The Wall Street Journal

It is investigating a complaint understood to have been made about Lowe last July by a third party, who cannot be identified.

From BBC

“No Lifetouch executives have ever had any relationship or contact with Epstein and we have never shared student images with any third party, including Apollo,” Murphy wrote.

From The Wall Street Journal

Related Words

• mediator