59 entries under supplement topic. ×

2
accession(noun, appendage, add-on)
2
add-on(noun, adjective, increase, addition, additional)
2
affix(noun, addition, accessory)
2
annex(noun, part, increase, addition, extension)
2
augmentation(noun, addition, complement, appendage)
2
balance(spare, excess, complement, debris)
2
extravagance(noun, treat, luxury, addition)
2
gain(noun, benefit, advantage, share, premium)
2
increase(noun, addition, appendage, add-on)
2
option(noun, adjective, increase, new, reserve)
2
padding(new, added)
2
remainder(spare, excess, complement, debris)
1
compensation(noun, reward, gift, complement)
1
increment(noun, increase, addition, appendage)
1
profit(noun, gain, share, premium, payment)
1
treat(noun, extravagance, addition)
0
accrual(noun, appendage, add-on)
0
added ingredient(noun, expression, attachment)
0
afterthought
0
aggrandizement(noun, appendage, add-on)
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APASmart Define. (2016). extra thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extra/thesaurus/synonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 22 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms>