46 entries under backup topic. ×

11
substitute(noun, person, cover, reserve, substitute)
9
surrogate(noun, person, thing, copy, substitute)
8
alternate(noun, person, copy, reserve, substitute)
8
relief(noun, reserve, replacement, alternative, alternate)
8
replacement(noun, adjective, person, reserve, substitute)
8
stand-in(noun, adjective, person, reserve, substitute)
7
double(noun, adjective, reserve, substitute, replacement)
7
pinch hitter(noun, expression, cover, informal, substitute)
7
sub(noun, adjective, informal, reserve, substitute)
7
understudy(noun, cover, reserve, substitute, replacement)
4
deputy(noun, cover, reserve, substitute, replacement)
4
dummy(noun, substitute, replacement, alternative, alternate)
4
proxy(noun, substitute, replacement, alternative, alternate)
4
representative(noun, substitute, replacement, alternative, alternate)
3
standby(noun, cover, reserve, substitute, replacement)
3
temporary(noun, reserve, substitute, replacement, alternate)
2
changeling(replacement, alternative, alternate, surrogate)
2
equivalent(substitute, replacement, alternative, alternate)
2
makeshift(substitute, replacement, alternative, alternate)
2
temp(noun, reserve, substitute, replacement, alternate)
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APASmart Define. (2015). fill-in thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fill-in/thesaurus/synonyms
ChicagoSmart Define. 2015. "fill-in thesaurus" https://smartdefine.org/fill-in/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, fill-in thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fill-in/thesaurus/synonyms>.
MLASmart Define. "fill-in thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/fill-in/thesaurus/synonyms>