Synonyms for surrogate

Noun

1. surrogate, alternate, replacement, stand-in, substitute, relief, reliever, backup, backup man, fill-in

usage: someone who takes the place of another person

2. deputy, surrogate, agent

usage: a person appointed to represent or act on behalf of others

Adjective

1. foster, surrogate, adoptive (vs. biological)

usage: providing or receiving nurture or parental care though not related by blood or legal ties; "foster parent"; "foster child"; "foster home"; "surrogate father"