surrogate

Definitions

A substitute, especially a person deputized to act in the place of another.

A woman who carries a pregnancy for another person or couple.

Something that acts as a proxy or representative for another thing.

Examples

The company used a surrogate to negotiate the deal without revealing their true identity.

In the absence of a direct measure, the researchers used body mass index as a surrogate for overall health.

Synonyms

substitute proxy replacement stand-in alternate delegate deputy

Antonyms

principal original source originator primary master prototype