34
expansion(noun, act, time, area, advance)
30
growth(noun, advance, increase, raise, gain)
27
spread(noun, territory, act, order, time)
27
enlargement(noun, act, advance, increase, raise)
26
development(noun, advance, increase, raise, gain)
23
increase(noun, advance, increase, rise, progress)
21
amplification(noun, increase, rise, development, spread)
21
progress(noun, advance, development, growth, evolution)
21
propagation(noun, development, evolution, breakthrough)
20
sweep(noun, territory, order, area, increase)
17
addition(noun, part, increase, raise, rise)
17
augmentation(noun, advance, increase, raise, gain)
16
continuation(noun, increase, line, spread, extra)
16
education(noun, development, evolution, breakthrough)
15
advance(noun, increase, progress, development, growth)
15
stretch(noun, territory, order, time, area)
14
prolongation(noun, act, increase, line, spread)
13
addendum(noun, increase, spread, extra, addition)
13
annex(noun, part, increase, spread, division)
13
wing(noun, area, part, increase, spread)
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APASmart Define. (2015). Extension thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/extension/thesaurus/synonyms
ChicagoSmart Define. 2015. "Extension thesaurus" https://smartdefine.org/extension/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, Extension thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/extension/thesaurus/synonyms>.
MLASmart Define. "Extension thesaurus" 22 December 2015. Web. 21 September 2026. <https://smartdefine.org/extension/thesaurus/synonyms>