surrogate

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun someone who takes the place of another person
noun a person appointed to represent or act on behalf of others
adjective providing or receiving nurture or parental care though not related by blood or legal ties

From Latin surrogātus, perfect passive participle of surrogō (“ask”); a variant of subrogō, from sub (“under”) + rogō (“ask”).

Surrogate, or mayor, or governor, even! — Changeling, and Other Stories, Donn Byrne
'Ah--well--I think you need not be so particular,' said the surrogate. — Two on a Tower, Thomas Hardy
Sarah, and now me--we'd been lured here to provide the life force for Mayan surrogate mothers. — Life Blood, Thomas Hoover

alternate, replacement

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