5
aggrandizement(noun, advance, increase, raise, rise)
5
also
5
annexe(noun, adjunct)
5
auxiliary(noun, adjective, part, extra, extension)
5
besides(adverb, preposition)
5
bonus(noun, advantage, extra, enlargement, plus)
5
continuation(noun, increase, delay, development, spread)
5
development(noun, advance, increase, raise, delay)
5
ell(noun, section, extension, annex, addendum)
5
evolution(advance, increase, progress, development, growth)
5
fixture(noun, part, extra, extension, accessory)
5
growth(noun, advance, increase, raise, rise)
5
improver
5
increasing(noun, advance, increase, progress, development)
5
inflation(noun, advance, increase, raise, rise)
5
sum(noun, mark, damage, total, quantity)
5
swelling(noun, increase, raise, rise, growth)
5
too
4
access(noun, raise, rise, growth, surge)
4
amalgamation(noun, augmentation, mixing)
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APASmart Define. (2015). addition thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/addition/thesaurus/synonyms
ChicagoSmart Define. 2015. "addition thesaurus" https://smartdefine.org/addition/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, addition thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/addition/thesaurus/synonyms>.
MLASmart Define. "addition thesaurus" 22 December 2015. Web. 20 September 2026. <https://smartdefine.org/addition/thesaurus/synonyms>