8 entries under extension topic. ×

11
extensile(adjective, increase, susceptible, supple)
7
expansible(adjective, increase)
6
extendible(adjective, increase, flexible, supple)
6
stretchable(adjective, increase, flexible, susceptible)
5
expandable(adjective, flexible, supple, stretchy)
4
protractile(adjective, increase)
3
extendable
3
protractible
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APASmart Define. (2015). extensible thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extensible/thesaurus/synonyms
ChicagoSmart Define. 2015. "extensible thesaurus" https://smartdefine.org/extensible/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, extensible thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extensible/thesaurus/synonyms>.
MLASmart Define. "extensible thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/extensible/thesaurus/synonyms>