Noun

• S: (n) surrogate (surrogate%1:18:01::), alternate (alternate%1:18:00::), replacement (replacement%1:18:02::) (someone who takes the place of another person)
• S: (n) deputy (deputy%1:18:02::), surrogate (surrogate%1:18:00::) (a person appointed to represent or act on behalf of others)
• direct hyponym / full hyponym
• direct hypernym / inherited hypernym / sister term
• derivationally related form

Adjective

• S: (adj) foster (foster%3:00:00:adoptive:00), surrogate (surrogate%3:00:00:adoptive:00) (providing or receiving nurture or parental care though not related by blood or legal ties) "foster parent"; "foster child"; "foster home"; "surrogate father"