33 entries under appendage topic. ×

9
extra(noun, fee, supplement, tax)
3
supplement(noun, extra, tax, add-on)
2
additive(noun, extra, supplement, add-on)
2
bonus(noun, extra, supplement, add-on)
2
increase(noun, verb, raise, boost, swell)
1
accession(noun, extra, supplement, add-on)
1
addendum(noun, extra, supplement, add-on)
1
addition(noun, extra, supplement, add-on)
1
adjunct(noun, extra, supplement, add-on)
1
annex(noun, extra, supplement, add-on)
1
augmentation(noun, extra, supplement, add-on)
1
boost(noun, verb, increase, raise, swell)
1
increment(noun, extra, supplement, add-on)
1
raise(noun, verb, increase, boost, swell)
0
accessory(noun, extra, supplement, add-on)
0
accrual(noun, extra, supplement, add-on)
0
add-on(noun, extra, supplement)
0
aggrandizement(noun, extra, supplement, add-on)
0
appendix(noun, extra, supplement, add-on)
0
attachment(noun, extra, supplement, add-on)
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APASmart Define. (2015). surcharge thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/surcharge/thesaurus/synonyms
ChicagoSmart Define. 2015. "surcharge thesaurus" https://smartdefine.org/surcharge/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, surcharge thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/surcharge/thesaurus/synonyms>.
MLASmart Define. "surcharge thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/surcharge/thesaurus/synonyms>