68 entries under extra topic. ×

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adjunct(noun, increase, addition, accessory)
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annex(noun, increase, addition, supplement)
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appendage(noun, increase, addition, accessory)
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appendix(noun, increase, addition, supplement)
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attachment(noun, accessory, supplement, appendage)
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balance(noun, rest, match, foil)
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bell(noun, increase, addition)
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bonus(noun, supplement, appendage, add-on)
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codicil(noun, increase, addition)
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commission(noun, supplement, appendage, add-on)
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companion(noun, rest, match, balance)
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continuation(noun, increase, addition)
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dividend(noun, supplement, appendage, add-on)
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insert(noun, increase, addition)
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insertion(noun, increase, addition)
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option(noun, increase, addition, supplement)
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postscript(noun, increase, addition)
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profit(noun, supplement, appendage, add-on)
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pullout(noun, increase, addition)
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raise(noun, increase, rise, growth, lift)
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APASmart Define. (2015). enhancement thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/enhancement/thesaurus/synonyms
ChicagoSmart Define. 2015. "enhancement thesaurus" https://smartdefine.org/enhancement/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, enhancement thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/enhancement/thesaurus/synonyms>.
MLASmart Define. "enhancement thesaurus" 22 December 2015. Web. 27 September 2026. <https://smartdefine.org/enhancement/thesaurus/synonyms>