42 entries under backup topic. ×

14
stopgap(adjective, short, substitute, replacement)
13
makeshift(adjective, unsettled, replacement, substitution)
9
alternate(adjective, present, short, substitute, replacement)
6
supply(noun, adjective, reserve, replacement, alternative)
4
deputy(noun, adjective, reserve, substitute, replacement)
3
dummy(extra, replacement, alternative, alternate, auxiliary)
2
proxy(extra, replacement, alternative, alternate, auxiliary)
2
reserve(extra, substitute, replacement, alternate, stalwart)
2
standby(noun, reserve, extra, substitute, replacement)
2
succedaneum(noun, replacement, alternative, alternate)
2
surrogate(adjective, extra, substitute, replacement, alternative)
1
equivalent(replacement, alternative, alternate, surrogate)
1
expedient(adjective, crude, substitute, replacement, alternate)
1
fill-in(noun, reserve, substitute, replacement, alternate)
1
agent(noun, replacement, alternative, alternate)
1
assistant(reserve, substitute, replacement, alternate, stalwart)
1
auxiliary(extra, substitute, replacement, alternative, alternate)
1
changeling(noun, replacement, alternative, alternate)
1
delegate(noun, replacement, alternative, alternate)
1
dernier ressort(noun, expression, replacement, alternative, alternate)
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APASmart Define. (2016). temporary thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/temporary/thesaurus/synonyms
ChicagoSmart Define. 2016. "temporary thesaurus" https://smartdefine.org/temporary/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, temporary thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/temporary/thesaurus/synonyms>.
MLASmart Define. "temporary thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/temporary/thesaurus/synonyms>