48 entries under extra topic. ×

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added feature(noun, expression, increase, addition)
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aggrandizement(noun, supplement, appendage, add-on)
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appendix(noun, increase, addition, supplement)
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bell(noun, increase, addition)
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bells and whistles(noun, expression, idiom, increase)
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bonus(noun, supplement, appendage, add-on)
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boost(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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dividend(noun, supplement, appendage, add-on)
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enhancement(noun, increase, addition, supplement)
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enlargement(noun, supplement, appendage, add-on)
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expansion(noun, supplement, appendage, add-on)
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gain(noun, supplement, appendage, add-on)
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hike(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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APASmart Define. (2015). additive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/additive/thesaurus/synonyms
ChicagoSmart Define. 2015. "additive thesaurus" https://smartdefine.org/additive/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, additive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/additive/thesaurus/synonyms>.
MLASmart Define. "additive thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/additive/thesaurus/synonyms>