129 entries under spare topic. ×

3
gratuitous(adjective, extreme, surplus, unnecessary)
3
inordinate(adjective, unreasonable, extreme, extravagant)
3
superfluity(noun, treat, luxury, extravagance)
3
uncalled-for(adjective, extreme, surplus, unnecessary)
2
above(adverb, also, more, besides)
2
alternative(place, open, free, lower)
2
appurtenant(adjective, support, auxiliary, supplementary)
2
as well(expression, also, too, likewise)
2
assistant(noun, assistant, auxiliary)
2
balance(excess, complement, supplement, debris)
2
complementary(adjective, support, additional, auxiliary)
2
emergency(noun, adjective, reserve, replacement)
2
expendable(adjective, extreme, surplus, unnecessary)
2
fuss(adjective, informal, excess, further)
2
gravy(noun, adjective, gain, advantage)
2
ice(noun, adjective, informal, advantage)
2
nonessential(noun, adjective, treat, extreme)
2
overage(gain, advantage, excess, bonus)
2
overrun
2
overstock(gain, advantage, excess, bonus)
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APASmart Define. (2016). extra thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/extra/thesaurus/synonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms>