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1. Providing or receiving nurture or parental care though not related by blood or legal ties
   "surrogate father"
   - foster

1. Someone who takes the place of another person
   - alternate, replacement
    
2. A person appointed to represent or act on behalf of others
   - deputy

Derived forms: surrogates

See also: adoptive

Type of: agent, backup, backup man, fill-in, relief, reliever, stand-in, substitute

Encyclopedia: Surrogate