94 entries under addition topic. ×
| option(noun, increase, extra, supplement) | |
| optional extra(noun, expression, attachment, supplement) | |
| partner(noun, attachment) | |
| porch(noun, wing, conservatory, lean-to) | |
| projection(noun, attachment) | |
| protuberance(noun, attachment) | |
| pullout(noun, increase, extra, supplement) | |
| something added(noun, expression, increase, extra) | |
| something conjoined(noun, expression, supplement) | |
| spin-off(noun, increase, extra, additive) | |
| subordinate(noun, attachment) | |
| supplementary building(noun, expression, extension) | |
| treat(noun, supplement) | |
| trimming(noun, supplement) |
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| APA | Smart Define. (2015). addendum thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/addendum/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "addendum thesaurus" https://smartdefine.org/addendum/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, addendum thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/addendum/thesaurus/synonyms>. |
| MLA | Smart Define. "addendum thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/addendum/thesaurus/synonyms> |