Synonyms|199Antonyms|4|Broader|5Narrower|0Related|112

17 entries under extension topic. ×

11
wing(noun, section, addition, annex)
9
addition(noun, section, annex, addendum)
6
addendum(noun, addition, annex)
6
annex(noun, division, extra, section, addition)
5
adjunct(noun, section, addition, annex)
4
arm(noun, division, section, addition)
4
attachment(noun, addition, annex, addendum)
4
block(noun, measure, division, section)
1
affix(noun, extra, addition, addendum)
1
appendix(noun, addition, addendum)
1
supplement(noun, addition, addendum)
0
detachment(noun, division, section, annex)
0
division(noun, section, annex, subdivision)
0
new building(noun, expression, addition)
0
section(noun, division, annex, subdivision)
0
subsidiary(noun, addition, addendum)
0
supplementary building(noun, expression, addition)
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ChicagoSmart Define. 2015. "ell thesaurus" https://smartdefine.org/ell/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, ell thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ell/thesaurus/synonyms>.
MLASmart Define. "ell thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/ell/thesaurus/synonyms>