| adornment(noun, decoration, accompaniment, fixture) | |
| advantage(noun, advance, increase, extra, improvement) | |
| affinity | |
| affix(noun, extension, supplement, adjunct, addendum) | |
| agglomeration(increase, growth, quantity, pile, gathering) | |
| alliance(noun, mixing) | |
| appendant | |
| appurtenant | |
| as well as(expression, idiom, preposition) | |
| ascent(noun, advance, increase, progress, growth) | |
| asset | |
| assimilation | |
| bells and whistles(noun, expression, idiom, increase, extra) | |
| benefit(noun, advance, increase, advantage, extra) | |
| broadening(noun, increase, delay, development, spread) | |
| buildup(noun, advance, increase, rise, progress) | |
| bump(noun, advance, increase, boost, promotion) | |
| catch(noun, acquisition) | |
| change(noun, break, advance, turn, development) | |
| claim(noun, acquisition) |
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| APA | Smart Define. (2015). addition thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/addition/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "addition thesaurus" https://smartdefine.org/addition/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, addition thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/addition/thesaurus/synonyms>. |
| MLA | Smart Define. "addition thesaurus" 22 December 2015. Web. 22 September 2026. <https://smartdefine.org/addition/thesaurus/synonyms> |