108 entries under addition topic. ×

4
increment(noun, increase, extra, supplement)
4
postscript(noun, end, increase, extra)
3
affix(noun, supplement)
3
appliance(noun, feature, fitting, decoration)
3
augmentation(noun, increase, delay, development, spread)
3
complement(noun, increase, extra, accessory)
2
accoutrement(noun, part, extra, extension)
2
additive(noun, increase, extra, supplement)
2
adornment(noun, decoration, accompaniment, fixture)
2
ancillary(noun, accessory, attachment, limb)
2
codicil(noun, increase, extra, supplement)
2
part(noun, end, extra, branch)
2
projection(noun, swell, lump, excess, branch)
2
protuberance(noun, swell, lump, excess)
2
sequel(noun, increase, extra, sequence)
2
subsidiary(noun, increase, extra)
1
add-on(noun, increase, extra, attachment)
1
amplification(noun, increase, delay, development, spread)
1
apparatus(noun, tackle, things, paraphernalia)
1
broadening(noun, increase, delay, development, spread)
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APASmart Define. (2015). appendage thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/appendage/thesaurus/synonyms
ChicagoSmart Define. 2015. "appendage thesaurus" https://smartdefine.org/appendage/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, appendage thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/appendage/thesaurus/synonyms>.
MLASmart Define. "appendage thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/appendage/thesaurus/synonyms>