140 entries under noun topic. ×

25
substitute(adjective, person, agent, substitute)
25
alternate(adjective, person, thing, agent)
19
deputy(adjective, person, thing, agent)
17
replacement(person, thing, agent, substitute)
16
delegate(person, thing, agent, replacement)
16
proxy(adjective, person, thing, agent)
16
stand-in(person, thing, agent, substitute)
14
representative(adjective, person, thing, agent)
11
agent(person, supply, agent, replacement)
11
understudy(substitute, replacement, alternative, alternate)
10
fill-in(person, thing, informal, substitute)
10
second(extra, agent, substitute, other)
9
backup(person, thing, agent, substitute)
8
alternative(adjective, extra, substitute, other)
8
double(substitute, replacement, alternative, alternate)
8
relief(support, property, capital, substitute)
7
lieutenant(agent, substitute, deputy)
6
attorney(agent, substitute, representative, operative)
6
emissary(agent, substitute, representative, operative)
6
imitation(extra, substitute, auxiliary, supernumerary)
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APASmart Define. (2015). surrogate thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/surrogate/thesaurus/synonyms
ChicagoSmart Define. 2015. "surrogate thesaurus" https://smartdefine.org/surrogate/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, surrogate thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/surrogate/thesaurus/synonyms>.
MLASmart Define. "surrogate thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/surrogate/thesaurus/synonyms>