n deputy, proxy, representative, stand-in, substitute
English Collins Dictionary - English synonyms & Thesaurus
surrogate ( surrogates plural ) You use surrogate to describe a person or thing that is given a particular role because the person or thing that should have the role is not available. adj ADJ n Martin had become Howard Cosell's surrogate son... Surrogate is also a noun., n-count Arms control should not be made into a surrogate for peace.
surrogate mother ( surrogate mothers plural ) A surrogate mother is a woman who has agreed to give birth to a baby on behalf of another woman. n-count
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