97 entries under noun topic. ×

44
substitute(verb, adjective, person, change)
21
surrogate(adjective, person, thing, agent)
18
alternative(adjective, counterfeit, near, reserve)
18
backup(adjective, lower, copy, inferior)
16
deputy(adjective, agent, substitute, replacement)
16
second(verb, adjective, lower, inferior)
16
stand-in(adjective, person, reserve, agent)
16
understudy(verb, cover, substitute, replacement)
15
exchange(verb, trade, substitute, switch)
15
replacement(adjective, person, reserve, extra)
14
proxy(adjective, cover, reserve, exchange)
12
double(adjective, cover, substitute, joint)
10
fill-in(adjective, person, informal, copy)
10
sub(adjective, person, cover, informal)
9
delegate(supply, agent, replacement, representative)
9
equivalent(adjective, substitute, replacement, backup)
8
representative(extra, agent, substitute, replacement)
7
reserve(adjective, cover, lower, inferior)
6
agent(supply, agent, substitute, replacement)
6
auxiliary(inferior, insignificant, reserve, minor)
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APASmart Define. (2016). alternate thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/alternate/thesaurus/synonyms
ChicagoSmart Define. 2016. "alternate thesaurus" https://smartdefine.org/alternate/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, alternate thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/alternate/thesaurus/synonyms>.
MLASmart Define. "alternate thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/alternate/thesaurus/synonyms>