surrogate
1. someone who takes the place of another person • Syn: alternate, replacement • Derivationally related forms: replace (for: replacement), alternate (for: alternate) • Hypernyms: stand-in, substitute, relief, reliever, backup, backup man, fill-in 2. a person appointed to represent or act on behalf of others • Syn: deputy • Derivationally related forms: deputize (for: deputy), deputise (for: deputy) • Hypernyms: agent • Hyponyms: vicegerent
providing or receiving nurture or parental care though not related by blood or legal ties - foster parent - foster child - foster home - surrogate father • Syn: foster • Similar to: adoptive
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