129 entries under spare topic. ×

10
extraneous(adjective, excess, further, surplus)
10
new(adjective, increase, excess, further)
10
reserve(noun, adjective, support, lower)
9
supererogatory(adjective, extreme, reserve, useless)
8
also(adjective, new, addition, additional)
8
another(adjective, place, lower, new)
8
other(adjective, place, increase, lower, new)
8
unnecessary(adjective, unreasonable, extreme, useless)
7
perk(noun, adjective, gain, benefit, informal)
7
besides(adjective, adverb, new, addition)
7
beyond(adjective, adverb, excess, further)
7
subsidiary(noun, adjective, support, increase, lower)
7
supportive(adjective, auxiliary)
7
tip(noun, adjective, advantage, reward)
7
too(extreme, addition, excessive, also)
7
unneeded(adjective, extreme, useless, excess)
6
extraordinary(adjective, excess, further, alternative)
6
inessential(noun, adjective, extreme, useless)
6
needless(adjective, unreasonable, extreme, useless)
6
odd(adjective, reserve, replacement, unused)
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APASmart Define. (2016). extra thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/extra/thesaurus/synonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms>