43 entries under backup topic. ×

16
alternate(noun, adjective, person, reserve, extra)
11
proxy(noun, adjective, agent, substitute, representative)
11
stand-in(noun, adjective, person, cover, reserve)
9
double(noun, adjective, reproduction, copy, spare)
9
understudy(noun, adjective, reserve, substitute, alternative)
8
relief(noun, reserve, substitute, alternate, stalwart)
8
successor(noun, cover, reserve, alternative, alternate)
7
fill-in(noun, adjective, person, informal, reserve)
6
dummy(noun, extra, substitute, alternative, alternate)
6
representative(noun, extra, agent, substitute, assistant)
6
sub(noun, adjective, person, informal, reserve)
5
delegate(noun, agent, substitute, representative, assistant)
5
equivalent(substitute, alternative, alternate, surrogate)
5
makeshift(noun, help, shift, extra, substitute)
5
succedaneum(noun, alternative, alternate, surrogate)
4
changeling(alternative, alternate, surrogate, substitution)
4
locum(noun, reserve, substitute, alternative, alternate)
4
pinch hitter(noun, expression, person, cover, informal)
3
agent(noun, substitute, representative, alternative, assistant)
3
locum tenens(expression, idiom, alternative, alternate)
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APASmart Define. (2015). replacement thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/replacement/thesaurus/synonyms
ChicagoSmart Define. 2015. "replacement thesaurus" https://smartdefine.org/replacement/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, replacement thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/replacement/thesaurus/synonyms>.
MLASmart Define. "replacement thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/replacement/thesaurus/synonyms>