393 entries under noun topic. ×
| accretion(increase, raise, gain, rise) | |
| accrual(increase, raise, gain, rise) | |
| advancement(advance, increase, progress, development) | |
| appurtenance(part, extra, addition, decoration) | |
| dilatation(increase, spread, growth, addition) | |
| dispersion(increase, expansion, circulation, spreading) | |
| ell(division, section, addition, annex) | |
| fixture(part, extra, addition, accessory) | |
| length(territory, order, area, remove) | |
| persistence(endurance, stability, continuation, steadiness) | |
| radius(territory, order, area, increase) | |
| swell(advance, raise, gain, rise) | |
| telephone extension(expression, idiom) | |
| accompaniment(addition, decoration, accompaniment, fixture) | |
| add-on(increase, treat, extra, extravagance) | |
| breadth(time, area, increase, remove) | |
| burgeoning(raise, gain, rise, development) | |
| continuing(increase, line, spread, addition) | |
| continuity(endurance, stability, persistence, steadiness) | |
| diffusion(expansion, circulation, spreading) |
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| APA | Smart Define. (2015). extension thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/extension/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "extension thesaurus" https://smartdefine.org/extension/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, extension thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/extension/thesaurus/synonyms>. |
| MLA | Smart Define. "extension thesaurus" 22 December 2015. Web. 28 September 2026. <https://smartdefine.org/extension/thesaurus/synonyms> |