57 entries under extra topic. ×

1
reserve(adjective, replacement, redundancy, unused)
1
residuary(adjective, spare, extreme, surplus)
1
superfluent(adjective, spare, extreme, surplus)
0
auxiliary(adjective, replacement, standby)
0
backup(adjective, reserve, replacement, unused)
0
emergency(adjective, reserve, replacement, unused)
0
in reserve(expression, adjective, reserve, replacement)
0
in store(expression, adjective, reserve, replacement)
0
lagniappe(adjective, reserve, replacement, unused)
0
more than enough(expression, adjective, idiom, reserve)
0
odd(adjective, reserve, replacement, unused)
0
option(adjective, reserve, replacement, unused)
0
over(adjective, reserve, replacement, unused)
0
replacement(adjective, standby)
0
standby(adjective, replacement)
0
unoccupied(adjective, reserve, replacement, unused)
0
unused(adjective, reserve, replacement, standby)
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APASmart Define. (2015). supererogatory thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/supererogatory/thesaurus/synonyms
ChicagoSmart Define. 2015. "supererogatory thesaurus" https://smartdefine.org/supererogatory/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, supererogatory thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/supererogatory/thesaurus/synonyms>.
MLASmart Define. "supererogatory thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/supererogatory/thesaurus/synonyms>