36 entries under substitute topic. ×

2
makeshift(replacement, alternative, alternate, backup)
2
temp(noun, reserve, replacement, alternate)
1
cover(reserve, fallback)
1
delegate(replacement, alternative, alternate, backup)
1
expediency(replacement, alternative, alternate, backup)
1
expedient(replacement, alternative, alternate, backup)
1
lieutenant
1
locum(noun, replacement, alternative, alternate)
1
recourse(replacement, alternative, alternate, backup)
1
refuge(replacement, alternative, alternate, backup)
1
reserve(noun, cover, replacement, alternative)
1
resort(replacement, alternative, alternate, backup)
1
resource(reserve, replacement, alternative, alternate)
1
second
1
stopgap(replacement, alternative, alternate, backup)
0
supply teacher(noun, expression, temp)
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APASmart Define. (2015). fill-in thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fill-in/thesaurus/synonyms
ChicagoSmart Define. 2015. "fill-in thesaurus" https://smartdefine.org/fill-in/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, fill-in thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fill-in/thesaurus/synonyms>.
MLASmart Define. "fill-in thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/fill-in/thesaurus/synonyms>